第十讲 If When 引导句
学目标1解if条件句法
2 掌握when引导句
3 理解7B Unit 1 单词
知识点
if引导条件状语句
1 含义 if意 果 假 引导条件状语句if引导句子复合句句 剩分句句
条件状语句中 if句描写发生动作 句谈发生结果
If it is hot tomorrow we will go swimming 果明天天气热话 游泳
↓ ↓
句 句
(发生动作) (发生结果)
2 位置 if引导条件状语句中 if条件句位置灵活 直接放句 放句前
if条件句放句首 句面加逗号 句隔开
例果周末空话 朋友
I will visit my best friend if I am free this weekend
If I am free this weekend I will visit my best friend
3 if引导条件状语句复合句中 句列情况时 句般现时态表示意义
(1) 句般时态时（性）例
If it doesn’t rain tomorrow I will go to have a picnic with my family
果明天雨 家野餐
(2) 句祈句时例
Please stay at home if it rains tomorrow 果明天雨话 请家里
(3) 句谓语含can may must等情态动词时例
You may ask for help from Mr Zhang if you have problems on Maths
果数学问题 张老师寻求帮助
(4) if句般现时句般现时（必然性）例：
If you heat ice it turns to water 果冰加热会化成水
注意 ：
学 if 引导条件状语句法现总结
if 条件句般点记心间
条件句放前逗号放句中间
条件句表句时
条件句表事实句常现时
if 引导条件状语句中果句谈发生事实产生相关结果句般时态句般现时态：
eg We can walk there if we can＇t find a bus
eg If it rains tomorrow we will not go to the zoo
eg What will you do if you find a panda in danger
果 if 条件句谈重复发生预示必定发生情景事件句般现时态：
eg If you go into a clothes shop you find clothes
eg If you go into a car showroom you see cars
eg Water turns into ice if you cool it
eg The wood floats if you put it into water
学练
I 单项选择
( )1 If I feel tired I ________ a rest
A will take B am taking C take D took
( )2 Jack what ______ you do if you ________a traffic accident
I will call the police
A did see B are see C do see D will see
( )3 If there is no Internet we _______ much trouble
A have B had C will have D is going to have
( )4 If I have time I ______ a talk with you
A will have B going to have C have D has
( )5 If you ________ time tomorrow I ______ shopping with you
A have go B will have go C have will go D could have will go
( )6 If you work for a long time you _________ tired
A will B can be C will be D have been
( )7 If Peter ______ time this evening he ______ to our party
A doesn’t have doesn’t come B won’t have doesn’t come
C won’t have won’t come D doesn’t have won’t come
( ) 8 If it rains we _______ our work on the farm
A stop B will stop C stopped D stops
II 正确答案划条线
1 Daina ( will gogogoes) to Europe if she (will passpasspasses) the exams
2 Where (will dodoes) they live if they (will miss miss misses) the bus
3 If there (will be areis) a car accident they (will callcallcalls) 110 for help at once
4 If it (won’tdon’tdoesn’t isn’t) rainy we (will take taketakes) walk outside
5 If a UFO (will landlandlands) in front of me I (will gogogoes) in to look for the alien
6 If he (will havehavehas) money he (will buildbuildbuilds) a science lab
7Don’t wait for me if I (am will be) late
8They (won’tdon’t) go to the beach if it (will rainrain rains)
9 I (will call call) you if he (will staystay stays) at home
10 Mr Smith (will let letlets) you know if he (will need need needs) help
III词适形式填空
1If you ________(feel) tired you _______________ (have) to have a rest
2 Where _______ he _________(see) the film if he ________________(have) time
3 If there __________(be) fewer trees there _______________( be) more pollution
4 He _____________(dress) more casually if he ________________( not work) on weekends
5 If Marcia _____________(live) alone she ___________________( keep) a pet parrot
6 Lana ________________( buy) a new dress if the old one ____________(be) out of style
7The twins ______________(fight) if they_______________(argue)
8 I ____________(have) a bake sale if I _____________(need) money for education
9 Peter _____________( send) me a beautiful souvenir if he ________________(tour) Spain
10 If Mr Green ___________(say) I am hard working my parents _________( feel) glad
二when引导时间状语句
复合句中 时间连接词when引导状语句时间状语句时句动作句动作时发生 句动作前发生具体体现方面
1 句动作句动作时发生 意 ……时 ……时候 例
He liked playing basketball when he was young 年轻时候 喜欢篮球
When Lucy was ten years old she was interested in playing the piano
露西十岁时候 弹钢琴感兴趣
2 句动作发生句动作前 例
When you get there please tell Lucy to call me back 请告诉露西回电话
Come here when you finish your homework 做完作业
3 句动作发生句动作 例
When I got home my grandparents had left 回家时 祖父母已离开
My classmates had gone when I finished reading the novel 完说 学早走
外 before after while as soon asuntil引导时间状语句例
1 I have to finish my homework before my father comes home 爸爸回家前完成作业
2 I began to do my homework after my father came home 爸爸回家 开始做作业
3 While they were talking the teacher came in 正说话时 老师进
4 I will tell him the news as soon as he comes back 回告诉消息
5 I didn’t do my homework until my father came home 直爸爸回家开始做作业
◆when法：
1when通常表示暂短性动词while通常表示持续性动词while引导状语句中谓语动词常进行时态：
When the car exploded I was walking past it While I was walking past the car it exploded
2when作列连词时句常进行时态句般时表示句动作发生程中意想动作发生：
I was walking in the street when someone called me 正街走时突然喊
3when作列连词表示（时）突然意时第列分句进行时when引导列分句般时：
1）I was taking a walk when I met him 正散步突然遇见
2）We were playing outside when it began to rain 正外边玩时起雨
◆ whenwhile引导时间状语句区：
when表示……时候句中延续性动词非延续性动词动词表示动作表示状态句中动作句动作时发生句动作前发生
例：Mary was having dinner when I saw her
The boy was still sleeping when his mother got home yesterday morning
When the teacher came in the students stopped talking
while表示……时候……期间 边……边……while句中必须表示动作状态延续性动词强调句动作句动作时发生句动作发生句动作程中
例：The weather was fine while we were in Beijing
She called while I was out
I was drawing while my brother was reading
He likes reading a newspaper while he is waiting for the bus
果句动作句动作程中发生句常进行时
例：While we were swimming someone stole our clothes
Don＇t talk so loud while others are working
◆ 时when while 转换
1）whenwhile……时候意思
when表示某点时间表示某段时间 when引导时间状语句中谓语动词延续性非延续性句中谓语动词时发生发生例：
1 I was just reading a book when she came into my room 走进房间时正书
2 Were you writing when the teacher came in 老师进时候写信？
3 When he was a child he was always trying out new ideas 时候常常试验新设想
2) while表示某段时间表示某点时间while引导时间状语句中谓语动词延续性句中谓语动词时发生存例：
1 While Jim was mending his bike Lin Tao came to see him 正吉姆修行车时林涛
2 You can’t do your homework while you’re watching TV 边电视边做家庭作业
3) 外whenwhile区：while引导时间状语句进行时态when引导时间状语句般时态例：
1 While they were talking the bell rang 正谈话时候课铃响
2 I was doing my homework when my mother came back home yesterday evening
昨天晚妈妈回家时候正做家庭作业
学练
I选择题
( )1I ______ cooked a meal when you _____ me
A cooked were ringing B was cooking rang C was cooking were ringing D cooked rang
( )2He said he _____ to draw a plane on the blackboard at that time
A tries B tried C was trying D will try
( )3While she ______ TV she ______ a sound outside the room
A was watching was hearing B watched was hearing
C watched heard D was watching heard
( )4They _____ a football game from 7 to 9 last night
A were watching B watch C watched D are watching
( )5What book ____ you ______ when I ____ you at four yesterday afternoon
A did read was seeing B did read saw
C were reading saw D were reading was seeing
( )6It was Friday evening Mr and Mrs Green _____ ready to fly to England
A are getting B get C were getting D got
( )7Lei Feng _____ always _____ of others when he ______ in the army
A is thinking was B was thinking is C did think is D was thinking was
( )8A girl ______ my pen fall off the table when she _____ me
A saw passed B was seeing passed C was seeing passed D was seeing was passing
( )9We ____ for tom at ten last Sunday He often kept us ______
A were waiting waiting B were waiting wait Cwaited waiting D waited wait
( )10 He ____ his father on the farm the whole afternoon last Saturday
A helps B would help C was helping D is helping
II 动词适形式填空
1 While we __________ (wait) for the bus a girl __________ (run) up to us
2 I __________ (telephone) a friend when Bob __________ (come) in
3 Jim __________ (jump) on the bus as it __________ (move) away
4 We __________ (test) the new machine when the electricity __________ (go) off
5 She __________ (not want) to stay in bed while the others ________ (all work) in the fields
6 While mother ________ (put) Cathy to bed the door bell ________ (ring)
7 As I __________ (walk) in the park it __________ (begin) to rain
8 Even when she ___________ (be) a child she _____ _____ (already think) of becoming a ballerina (芭蕾舞演员)
9 It was quite late at night George __________ (read) and Amy __________ (ply) her needle when they __________ (hear) a knock at the door
10 There __________ (be) a group round the fire when they __________ (reach) it An old woman __________ (sit) on the ground near the kettle two small children __________ (lie) near her a donkey __________ (bend) his head over a tall girl
III翻译列句子
1 离开时候正画幅世界图
2 见时候干什？扫教室
3 汤姆操场踢足球时约翰篮球
4 天母亲班回家时候约翰写朋友写信
5 老师走进教室时候学术正谈天新闻
课作业
I 单项选择ABCD四选项中选出填入空白处佳答案
( ) 1 _____ I grow up I want to be a teacher
A When B Because C If D Where
( ) 2 _____ I was four I went to school
A If B When C How D What
( ) 3 Mary got to the station _____ it was 8 o’clock
A because B when C if D how
( ) 4 My mother will take a plastic bag _____ she goes shopping
A because B what C when D how
( ) 5 _____ my wife was reading the newspaper I was watching TV
A While B After C Before D Because
( ) 6 It will be a long time ____ we meet again
A before B what C so D because
( ) 7 Look The birds are singing happily ____ Tom comes towards them
A when B how C what D who
( ) 8 If you _____ to the party you’ll have a great time
A will go B went C go D going
( ) 9 What will father _____ us from Japan
A take B bring C carry D make
( ) 10 I ____ her the answer if she ____me
A can tell will ask B will tell will ask C would tell ask D will tell asks
( ) 11 – What are you going to do tomorrow
We’ll go to the library tomorrow if it ___
A isn’t rain B rain C won’t rain D doesn’t rain
( ) 12—Do you know when he will come back tomorrow
Sorry I don’t know When he ____ back I’ll tell you
A comes B will come C come D may come
( ) 13 What will you do if you _____ to the old folk’s home visit
A go B went Cgoing D will go
( ) 14 I’ll give the book to him if he ___ here next Sunday
A will come B comes C is coming D came
II 括号单词正确时态填空
1 If you do exercises every day you _______ (be) stronger
2 The room ________ (become) bright if you open the window and let the sunshine in
3 If you _________ (travel) in space you will lose gravity
4 If it ___________ (not rain) any more the plants will die
5 Our city will get dirty if we ____________ (throw) rubbish everywhere
6 If he ________ (study) hard he will get good grades
7 Everyone must wear odd (古怪) clothes If you don’t they __________ (not let) you in
8 Don’t do that if you __________ (have) no money
9 My grandfather will wear a pair of glasses if he _______ (read) newspapers
10 Please turn off the light if you _________ (leave) the classroom
11 ______ it ______(rain) when you left schoolYes it ____ (No it ____)
12 What _____ your father _____ (do) when he was your age
13 When the bell rang jenny _____ (wait) in her seat
14 While my father ____ (look) through the evening paper he suddenly ____ a cry
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学目标1解if条件句法
2 掌握when引导句
3 理解7B Unit 1 单词
知识点
if引导条件状语句
1 含义 if意 果 假 引导条件状语句if引导句子复合句句 剩分句句
条件状语句中 if句描写发生动作 句谈发生结果
If it is hot tomorrow we will go swimming 果明天天气热话 游泳
↓ ↓
句 句
(发生动作) (发生结果)
2 位置 if引导条件状语句中 if条件句位置灵活 直接放句 放句前
if条件句放句首 句面加逗号 句隔开
例果周末空话 朋友
I will visit my best friend if I am free this weekend
If I am free this weekend I will visit my best friend
3 if引导条件状语句复合句中 句列情况时 句般现时态表示意义
(1) 句般时态时（性）例
If it doesn’t rain tomorrow I will go to have a picnic with my family
果明天雨 家野餐
(2) 句祈句时例
Please stay at home if it rains tomorrow 果明天雨话 请家里
(3) 句谓语含can may must等情态动词时例
You may ask for help from Mr Zhang if you have problems on Maths
果数学问题 张老师寻求帮助
(4) if句般现时句般现时（必然性）例：
If you heat ice it turns to water 果冰加热会化成水
注意 ：
学 if 引导条件状语句法现总结
if 条件句般点记心间
条件句放前逗号放句中间
条件句表句时
条件句表事实句常现时
if 引导条件状语句中果句谈发生事实产生相关结果句般时态句般现时态：
eg We can walk there if we can＇t find a bus
eg If it rains tomorrow we will not go to the zoo
eg What will you do if you find a panda in danger
果 if 条件句谈重复发生预示必定发生情景事件句般现时态：
eg If you go into a clothes shop you find clothes
eg If you go into a car showroom you see cars
eg Water turns into ice if you cool it
eg The wood floats if you put it into water
学练
I 单项选择
( )1 If I feel tired I ________ a rest
A will take B am taking C take D took
( )2 Jack what ______ you do if you ________a traffic accident
I will call the police
A did see B are see C do see D will see
( )3 If there is no Internet we _______ much trouble
A have B had C will have D is going to have
( )4 If I have time I ______ a talk with you
A will have B going to have C have D has
( )5 If you ________ time tomorrow I ______ shopping with you
A have go B will have go C have will go D could have will go
( )6 If you work for a long time you _________ tired
A will B can be C will be D have been
( )7 If Peter ______ time this evening he ______ to our party
A doesn’t have doesn’t come B won’t have doesn’t come
C won’t have won’t come D doesn’t have won’t come
( ) 8 If it rains we _______ our work on the farm
A stop B will stop C stopped D stops
II 正确答案划条线
1 Daina ( will gogogoes) to Europe if she (will passpasspasses) the exams
2 Where (will dodoes) they live if they (will miss miss misses) the bus
3 If there (will be areis) a car accident they (will callcallcalls) 110 for help at once
4 If it (won’tdon’tdoesn’t isn’t) rainy we (will take taketakes) walk outside
5 If a UFO (will landlandlands) in front of me I (will gogogoes) in to look for the alien
6 If he (will havehavehas) money he (will buildbuildbuilds) a science lab
7Don’t wait for me if I (am will be) late
8They (won’tdon’t) go to the beach if it (will rainrain rains)
9 I (will call call) you if he (will staystay stays) at home
10 Mr Smith (will let letlets) you know if he (will need need needs) help
III词适形式填空
1If you ________(feel) tired you _______________ (have) to have a rest
2 Where _______ he _________(see) the film if he ________________(have) time
3 If there __________(be) fewer trees there _______________( be) more pollution
4 He _____________(dress) more casually if he ________________( not work) on weekends
5 If Marcia _____________(live) alone she ___________________( keep) a pet parrot
6 Lana ________________( buy) a new dress if the old one ____________(be) out of style
7The twins ______________(fight) if they_______________(argue)
8 I ____________(have) a bake sale if I _____________(need) money for education
9 Peter _____________( send) me a beautiful souvenir if he ________________(tour) Spain
10 If Mr Green ___________(say) I am hard working my parents _________( feel) glad
二when引导时间状语句
复合句中 时间连接词when引导状语句时间状语句时句动作句动作时发生 句动作前发生具体体现方面
1 句动作句动作时发生 意 ……时 ……时候 例
He liked playing basketball when he was young 年轻时候 喜欢篮球
When Lucy was ten years old she was interested in playing the piano
露西十岁时候 弹钢琴感兴趣
2 句动作发生句动作前 例
When you get there please tell Lucy to call me back 请告诉露西回电话
Come here when you finish your homework 做完作业
3 句动作发生句动作 例
When I got home my grandparents had left 回家时 祖父母已离开
My classmates had gone when I finished reading the novel 完说 学早走
外 before after while as soon asuntil引导时间状语句例
1 I have to finish my homework before my father comes home 爸爸回家前完成作业
2 I began to do my homework after my father came home 爸爸回家 开始做作业
3 While they were talking the teacher came in 正说话时 老师进
4 I will tell him the news as soon as he comes back 回告诉消息
5 I didn’t do my homework until my father came home 直爸爸回家开始做作业
◆when法：
1when通常表示暂短性动词while通常表示持续性动词while引导状语句中谓语动词常进行时态：
When the car exploded I was walking past it While I was walking past the car it exploded
2when作列连词时句常进行时态句般时表示句动作发生程中意想动作发生：
I was walking in the street when someone called me 正街走时突然喊
3when作列连词表示（时）突然意时第列分句进行时when引导列分句般时：
1）I was taking a walk when I met him 正散步突然遇见
2）We were playing outside when it began to rain 正外边玩时起雨
◆ whenwhile引导时间状语句区：
when表示……时候句中延续性动词非延续性动词动词表示动作表示状态句中动作句动作时发生句动作前发生
例：Mary was having dinner when I saw her
The boy was still sleeping when his mother got home yesterday morning
When the teacher came in the students stopped talking
while表示……时候……期间 边……边……while句中必须表示动作状态延续性动词强调句动作句动作时发生句动作发生句动作程中
例：The weather was fine while we were in Beijing
She called while I was out
I was drawing while my brother was reading
He likes reading a newspaper while he is waiting for the bus
果句动作句动作程中发生句常进行时
例：While we were swimming someone stole our clothes
Don＇t talk so loud while others are working
◆ 时when while 转换
1）whenwhile……时候意思
when表示某点时间表示某段时间 when引导时间状语句中谓语动词延续性非延续性句中谓语动词时发生发生例：
1 I was just reading a book when she came into my room 走进房间时正书
2 Were you writing when the teacher came in 老师进时候写信？
3 When he was a child he was always trying out new ideas 时候常常试验新设想
2) while表示某段时间表示某点时间while引导时间状语句中谓语动词延续性句中谓语动词时发生存例：
1 While Jim was mending his bike Lin Tao came to see him 正吉姆修行车时林涛
2 You can’t do your homework while you’re watching TV 边电视边做家庭作业
3) 外whenwhile区：while引导时间状语句进行时态when引导时间状语句般时态例：
1 While they were talking the bell rang 正谈话时候课铃响
2 I was doing my homework when my mother came back home yesterday evening
昨天晚妈妈回家时候正做家庭作业
学练
I选择题
( )1I ______ cooked a meal when you _____ me
A cooked were ringing B was cooking rang C was cooking were ringing D cooked rang
( )2He said he _____ to draw a plane on the blackboard at that time
A tries B tried C was trying D will try
( )3While she ______ TV she ______ a sound outside the room
A was watching was hearing B watched was hearing
C watched heard D was watching heard
( )4They _____ a football game from 7 to 9 last night
A were watching B watch C watched D are watching
( )5What book ____ you ______ when I ____ you at four yesterday afternoon
A did read was seeing B did read saw
C were reading saw D were reading was seeing
( )6It was Friday evening Mr and Mrs Green _____ ready to fly to England
A are getting B get C were getting D got
( )7Lei Feng _____ always _____ of others when he ______ in the army
A is thinking was B was thinking is C did think is D was thinking was
( )8A girl ______ my pen fall off the table when she _____ me
A saw passed B was seeing passed C was seeing passed D was seeing was passing
( )9We ____ for tom at ten last Sunday He often kept us ______
A were waiting waiting B were waiting wait Cwaited waiting D waited wait
( )10 He ____ his father on the farm the whole afternoon last Saturday
A helps B would help C was helping D is helping
II 动词适形式填空
1 While we __________ (wait) for the bus a girl __________ (run) up to us
2 I __________ (telephone) a friend when Bob __________ (come) in
3 Jim __________ (jump) on the bus as it __________ (move) away
4 We __________ (test) the new machine when the electricity __________ (go) off
5 She __________ (not want) to stay in bed while the others ________ (all work) in the fields
6 While mother ________ (put) Cathy to bed the door bell ________ (ring)
7 As I __________ (walk) in the park it __________ (begin) to rain
8 Even when she ___________ (be) a child she _____ _____ (already think) of becoming a ballerina (芭蕾舞演员)
9 It was quite late at night George __________ (read) and Amy __________ (ply) her needle when they __________ (hear) a knock at the door
10 There __________ (be) a group round the fire when they __________ (reach) it An old woman __________ (sit) on the ground near the kettle two small children __________ (lie) near her a donkey __________ (bend) his head over a tall girl
III翻译列句子
1 离开时候正画幅世界图
2 见时候干什？扫教室
3 汤姆操场踢足球时约翰篮球
4 天母亲班回家时候约翰写朋友写信
5 老师走进教室时候学术正谈天新闻
课作业
I 单项选择ABCD四选项中选出填入空白处佳答案
( ) 1 _____ I grow up I want to be a teacher
A When B Because C If D Where
( ) 2 _____ I was four I went to school
A If B When C How D What
( ) 3 Mary got to the station _____ it was 8 o’clock
A because B when C if D how
( ) 4 My mother will take a plastic bag _____ she goes shopping
A because B what C when D how
( ) 5 _____ my wife was reading the newspaper I was watching TV
A While B After C Before D Because
( ) 6 It will be a long time ____ we meet again
A before B what C so D because
( ) 7 Look The birds are singing happily ____ Tom comes towards them
A when B how C what D who
( ) 8 If you _____ to the party you’ll have a great time
A will go B went C go D going
( ) 9 What will father _____ us from Japan
A take B bring C carry D make
( ) 10 I ____ her the answer if she ____me
A can tell will ask B will tell will ask C would tell ask D will tell asks
( ) 11 – What are you going to do tomorrow
We’ll go to the library tomorrow if it ___
A isn’t rain B rain C won’t rain D doesn’t rain
( ) 12—Do you know when he will come back tomorrow
Sorry I don’t know When he ____ back I’ll tell you
A comes B will come C come D may come
( ) 13 What will you do if you _____ to the old folk’s home visit
A go B went Cgoing D will go
( ) 14 I’ll give the book to him if he ___ here next Sunday
A will come B comes C is coming D came
II 括号单词正确时态填空
1 If you do exercises every day you _______ (be) stronger
2 The room ________ (become) bright if you open the window and let the sunshine in
3 If you _________ (travel) in space you will lose gravity
4 If it ___________ (not rain) any more the plants will die
5 Our city will get dirty if we ____________ (throw) rubbish everywhere
6 If he ________ (study) hard he will get good grades
7 Everyone must wear odd (古怪) clothes If you don’t they __________ (not let) you in
8 Don’t do that if you __________ (have) no money
9 My grandfather will wear a pair of glasses if he _______ (read) newspapers
10 Please turn off the light if you _________ (leave) the classroom
11 ______ it ______(rain) when you left schoolYes it ____ (No it ____)
12 What _____ your father _____ (do) when he was your age
13 When the bell rang jenny _____ (wait) in her seat
14 While my father ____ (look) through the evening paper he suddenly ____ a cry
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