人教版八年級英語上冊第十單元IF引導的條件狀語從句

1、If 引導的條件狀語從句引導的條件狀語從句If you re happy and you know it Clap Your handsIf you re happy and you know it Clap your handsIf you re happy and you know itNever be afraid to show itIf you re happy and you know it Clap your handsIf you re happy and you know it Stomp your feetIf you re happy and you know it St

2、omp your feetIf you re happy and you know itNever be afraid to show itIf you re happy and you know it Stomp your feetIf you re happy and you know it Wink your okIf you re happy and you know it Wink your okIf you re happy and you know itNever be afriad to show itIf you re happy and you know it Wink y

3、our ok什么是狀語？什么是狀語？He speaks English very well. You are very beautiful.（）（）（）主語謂語賓語狀語 用來修飾用來修飾動詞動詞，形容詞形容詞，副詞副詞以及全句的句子成分，叫做以及全句的句子成分，叫做狀狀語語。用作狀語的通常是用作狀語的通常是副詞副詞，介介詞短語詞短語，不定式不定式和和從句從句等。等。狀語從句u在復合句中表示的狀語在復合句中表示的狀語u可以用來修飾謂語（包括非謂語可以用來修飾謂語（包括非謂語動詞）、定語、狀語或整個句子。動詞）、定語、狀語或整個句子。 位置位置：從句從句可放在可放在主句主句之之前前或之或之后后，但

4、是放在，但是放在主句之主句之前前須有須有逗號隔開逗號隔開eg:如果我有足夠的錢，我就去環(huán)游世界。如果我有足夠的錢，我就去環(huán)游世界。If 引導條件狀語從句 定義定義：If “如果如果, 假如假如” 它引導的句子它引導的句子表示某事發(fā)生所需的表示某事發(fā)生所需的條件，即條件，即“在在條件下，某事才能發(fā)生條件下，某事才能發(fā)生”，在句子中充當狀語，在句子中充當狀語，因此稱之為條件狀語從句因此稱之為條件狀語從句。（。（ If 引導的條件狀語從句表示假引導的條件狀語從句表示假如有從句的動作發(fā)生，就會有主句動作的發(fā)生如有從句的動作發(fā)生，就會有主句動作的發(fā)生 ）If I have enough money, I

5、 will travel around the world .=I will travel around the world if I have enough money.If條件句：條件句：條件句用于陳述語氣，表示假設的情況可能發(fā)生，條件句用于陳述語氣，表示假設的情況可能發(fā)生，其中其中 if 是是“如果如果”的意思。的意思。主句主句一般將來時一般將來時 ，從句用一般現在時。，從句用一般現在時。 構構成成條件從句條件從句主句主句時時態(tài)態(tài)If一般現在時一般現在時主語主語shall/will+動詞原形動詞原形例例句句If he comes,he will take us to the zoo.1.

6、 如果主句是一般將來時，從句則用一般現在時。如果主句是一般將來時，從句則用一般現在時。 If it rains（從句），（從句）， I will stay at home. Ill go with you if you dont want to go alone（從句）（從句）. 2.如果主句含有如果主句含有must, may, can 等情態(tài)動詞，從句也要用等情態(tài)動詞，從句也要用一般現在時。一般現在時。 If you drive too fast, you may have an accident. You must stop if the traffic is red. If you fi

7、nish the homework， you can go home 如果你作業(yè)做完了就可以回家了。如果你作業(yè)做完了就可以回家了。 If you want to lose weight you must/should eat less bread. 如果你想減肥，你必須少吃面包。如果你想減肥，你必須少吃面包。3. 如果主句是如果主句是祈使句祈使句，從句同樣要用一般現在時。，從句同樣要用一般現在時。If 引導的條件狀語從句的基本用法引導的條件狀語從句的基本用法:Summary: if 引導的條件狀語從句引導的條件狀語從句，如果如果主句主句是是_,那if引導的從句用_表示將來可能發(fā)生的動作或存在的

8、狀態(tài)，也就是所謂的_主將從現主將從現一般將來時一般將來時一般現在時一般現在時把下列句子組成主將從現的句子把下列句子組成主將從現的句子If she, call mewillI,tell her about itIf she calls me, I will tell her about it.Ifit,not rainwillgo hiking, this afternoonIf it doesnt rain, I will go hiking this afternoonIfshe, not exercise enoughWill heavierIf she doesnt exercise e

9、nough, she will be heavierIfI,happywillI , go shoppingIf I am happy, I will go shoppingIfshe, study hardwillget good gradesIf she studies hard, she will get good gradesIf you,eat too muchwillhave a stomachacheIf you eat too much, you will have a stomachaheSummary: 含含if 條件狀語從句中，如果主句用條件狀語從句中，如果主句用一般將來

10、時，從句用一般將來時，從句用_表表將來，將來，_原則原則主將從現主將從現一般現在時一般現在時練習練習1.We will go to the park if it _(not rain)2.If you are free, we _(dance) tomorrow3.You _(have) a great time if you go to the party.4.If you _(take) the bus to the party, you _(be) late.5.What _(happen) if they _(have) the party.6.If we _(ask) people

11、to bring food, they _(bring) potato chips7.If she_ (get) up late, she _(miss) the bus.8.If Tom _(watch) TV every day, he _(not have) enough time to study.doesnt rainwill dancewill havetakewill bewill happenhaveaskwill bringgetswill misswatchesdoesnt have練一練：1。如果她早點兒起床，就有時間在家里吃早餐。如果她早點兒起床，就有時間在家里吃早餐

12、If she_ _a little earlier, shell have time to eat breakfast at home.2。如果你參加聚會，你將會過得很開心。如果你參加聚會，你將會過得很開心。If you_ the party ,you_ _ a great time.3。如果明天下雨，我們將不去野餐。如果明天下雨，我們將不去野餐If it _tomorrow, we _ _ for a picnic.4。如果你經常聽英文歌，你將會喜歡英語。如果你經常聽英文歌，你將會喜歡英語If you often _ _English songs, you_ English.gets upj

13、oin will haverains wont golisten towill like1.If he_ (not, do it ), I_(do) it.2.If you _ (be) late for school ,my teacher _(be) angry.arewill be3 If she_ (win) the prize ,we _(be) happy.winswill be4.If I _ (not, eat )so much ,I _(get) thinner.5.If you _(tell) them, they _ (not, believe) you.dont eat

14、will gettellwont believe6 I _(stay) at home,If it _( rain).7.If it _( not, rain) ,I _( go) out.8. we _(play) football, If it is _(sun) .9.If she _(become) a star ,her parents _ (not,send) her away 10.He _(watch) TV ,if he _(be) free.will stayrainsdoesnt rain will gowill playsunnybecomeswont sendwill

15、 watchisdoesnt dowill do1.Im sure if he _(go) to the party, he_ (have) a great time.2.If the rain _(stop) tonight, we will go to the cinema.3.Ill buy a computer if I _(have) enough money.4.You _(not get) nervous if you _(do ) enough exercise.6.I want to know if he _(come) tomorrow, if he _(come), I

16、_(give) the massage to him. goes will have stopshave wont getdo comes will come will give1. I _(record) the CD for you tomorrow.2. Does she often _(lend) money to her brother?3. The snake _(not appear) if you make noise.4. In the final exam, I _(get) good marks. will record lend wont appear will get

17、 2.You may _ (pass) the exam if you _ (study) hard. rainswill stay passstudy 3. If you want to record, _(press) the red light.press1.If It_ (rain) tomorrow, I _(stay) at home.Fill in the blankets with the proper form 用括號內所給詞的正確形式填空用括號內所給詞的正確形式填空1.If the rain _(stop) tonight, we will go to the cinema.2.Ill buy a computer if I _(have) enough money.3.You _(not get) nervous if you _(do ) enough exercise.4.If she _ (be) kind to me , I _(not argue) with her.5.I want to know if he _(come) tomorrow, if he _(come), I _(give) the massage to him. stopshave wont getdo iswo