廣東省廣州市花都區(qū)赤坭中學(xué)七年級英語上冊Unit6Grammar課件牛津深圳版

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1、 if 引導(dǎo)的條件狀語從句 (Conditional sentences) be free tomorrow, play basketballIf I am free tomorrow, Ill play basketball.Ill play basketball if I am free tomorrow. doesnt rain tomorrow, play footballIf it doesnt rain tomorrow, Ill play football.Ill play football if it doesnt rain tomorrow. finish ones home

2、work, go swimming If I finish my homework, Ill go swimming.Ill go swimming if I finish my homework. if引導(dǎo)的條件狀語從句觀察下列例句，總結(jié)if引導(dǎo)的條件狀語從句的用法?！纠洹?1. If you stand in the rain, you get wet. 2. You get wet if you stand in the rain. 3. If it doesnt rain tomorrow, I will plant some flowers in my garden. 4. I w

3、ill plant some flowers in my garden if it doesnt rain tomorrow. if 引導(dǎo)的條件狀語從句【總結(jié)】 1. if意為 “_”， 引導(dǎo)_狀語從句。當(dāng)表示條件成立就必然有某種結(jié)果（常用于客觀真理）時(shí)，主句和從句都用_時(shí)（例1、2）For example: 1) If you stand in the rain, you get wet. 2) You get wet if you stand in the rain. 如果條件一般現(xiàn)在 當(dāng)表示條件成立就可能有某種結(jié)果時(shí)，如果主句用_時(shí)，則從句用_時(shí)，簡稱“主將從現(xiàn)”（例3、4）。 For

4、example: 3) If it doesnt rain tomorrow, I will plant some flowers in my garden. 4) I will plant some flowers in my garden if it doesnt rain tomorrow.一般將來一般現(xiàn)在 2. 當(dāng)if引導(dǎo)的從句在主句之前時(shí)，_（用/不 用）逗號隔開兩個(gè)句子（例1、3）；當(dāng)主句在從句之前，則_（用/不用）加逗號（例2、4）?！纠洹?1) If you stand in the rain, you get wet. 2) You get wet if you stand

5、 in the rain. 3) If it doesnt rain tomorrow, I will plant some flowers in my garden. 4) I will plant some flowers in my garden if it doesnt rain tomorrow.用不用 在 if 引導(dǎo)的條件狀語從句中，還要注意前后時(shí)態(tài)一致的原則。Tips: Conditional sentencesIf you walk along the Bund， you will see many old buildings.The if-clause talks about

6、 a possible action.The main clause talks about the likely result. we can also put the if-clause after the main clause. You will see many old buildings if you walk along the Bund.Main clauseif-clause Work out the ruleThe verb in the if-clause is in (the simple present tense/the simple future tense).T

7、he verb in the main clause is in (the simple present tense/the simple future tense). A Williams mum is giving him advice about his problems. Match the half-sentences from the boxes to complete her advice for him. Williams problems1. I sometimes bring the wrong books to school.If you check your timet

8、able every night，you will know which books to bring. 2. I was away from school today. I do not know what homework to do.If you call your friends, they will tell you what homework to do. 3. I hate getting up. I always feel tired in the mornings.If you go to bed early, you will not feel tired in the m

9、ornings. 4. I do not know what this word means.If you look it up in the dictionary, you will find out its meaning. B Carol is giving advice to Henry. What is she saying? Use the pictures and the words in brackets to help you._ the wheels round, they_ easily.(make/turn)If you makewill turn 2.The seed

10、s _in the soil.(grow/plant)will grow if you plant them 3. _ another wing, it _.(put on/ fly)If you put onwill fly 4. _ your coat, you _ so cold. (put on/not feel)If you put onwill not feel 5. The meat _ in the fridge. (not go bad/put)will not go bad if you put it 6. You _your classes. (see clearly/w

11、ear)will see clearly if you wear “if條件句不一般, 幾個(gè)要點(diǎn)記心間；條件句, 放在前, 逗號要放句中間；條件句表可能，主句多用將來時(shí)；條件句表事實(shí)，主句常用現(xiàn)在時(shí)?！?一、判斷下列句子的正誤，如果有誤， 在后面的橫線上更正。 1. If you will do more exercise this summer, you will be very fit. _ 2. The candle burns, if you light it. _will do do把逗號去掉/ If you light it, the candle burns. 3. I will

12、 build many schools for the poor children if I win a billion dollars. _ 4. If you freeze water, it will turn into ice. _ 5. My uncle visits the school if he will have time. _正確will turn turnsvisits will visit/can visit will have has 二、選擇最佳答案填空。 1. If he _ hard, he will get good grades.A. study B. st

13、udies C. will study D. studied 2. If you _ water, it _ steam. A. boil, will become B. boil, becomes C. to boil, will become D. will boil, becomes BB 3. Everyone must dress up. If you _, they wont let you in. A. dont B. wont C. cant D. mustnt4. Mary will go to Sanya if she _ a five-day trip. A. have

14、B. had C. will have D. has AD 5.If it _ tomorrow, we _ hiking. A. dont rain, will go B. will rain, go C. doesnt rain, will go D. doesnt rain, go 6.He_ if it _ fine tomorrow. A. not leave, isnt B. doesnt leave, will not C. doesnt leave, isnt D. will not leave, isnt CD 三、根據(jù)中文意思完成句子。 1. 如果你不運(yùn)動(dòng)，你就會變胖。If

15、 you _ _ exercise, you _ _ _. 2. 如果我早點(diǎn)完成作業(yè)，我就會早點(diǎn)睡。I _ _ to bed early if I _ my homework early. 3. 如果植物得不到足夠的水，它們就長不好。If plants _ _ enough water, they _ _ well.dont do will get fatwill go finishdont getdont grow 四、用括號內(nèi)所給單詞的正確形式填空。1. A fish _(die) if you _(take) it out of water for a long time.2. Jack

16、 wants to know if they _ (have) sports meeting tomorrow? Yes. But if it _(rain), they _ (have) lessons instead. 3. If you _(drop) the bowl to the ground, it _(break).4. You _(succeed) if you try _(study) hard.dies takewill have rains will have drop will break will succeed to study 五、用if將句子連接起來, 注意動(dòng)詞

17、的適當(dāng)形式。1. You heat the ice. It melts. 2. You pour water onto the fire. It is put out. 3. You go to bed late tonight. You will feel tired tomorrow. If you heat the ice, it melts. If you pour water onto the fire, it is put out.If you go to bed late tonight, you will feel tired tomorrow. 用if將句子連接起來, 注意動(dòng)詞的適當(dāng)形式。4. You are not tired. Lets go for a walk. 5. We will go climbing tomorrow. It wont rain. If you are not tired, lets go for a walk.If it doesnt rain tomorrow, we will go climbing.