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1、歡迎來(lái)到英語(yǔ)課堂歡迎來(lái)到英語(yǔ)課堂第三課時(shí)第三課時(shí)Section A(Grammar Focus3c)單元同步語(yǔ)法精講含有if引導(dǎo)的條件狀語(yǔ)從句的主從復(fù)合句由一個(gè)主句和一個(gè)或一個(gè)以上的從句構(gòu)成的句子叫復(fù)合句。若由連接詞引導(dǎo)的句子在復(fù)合句中表示條件，作主句的條件狀語(yǔ)，則該句子被稱(chēng)為條件狀語(yǔ)從句。1條件狀語(yǔ)從句的引導(dǎo)詞。條件狀語(yǔ)從句通常由連詞if(如果，假如)，unless(ifnot，除非，如果不)引導(dǎo)。eg：You will get good grades，if you study hard.如果你努力學(xué)習(xí)，就會(huì)取得好成績(jī)。If you dont leave right away，you wil

2、l be late.如果你不馬上來(lái)，你將會(huì)遲到的。2條件狀語(yǔ)從句的位置。條件狀語(yǔ)從句既可以放在主句之前，也可以放在主句之后。如果放在主句之前，要用逗號(hào)與主句隔開(kāi)；如果放在主句之后，中間不必用逗號(hào)。eg：If it doesnt rain tomorrow，we will go shopping.如果明天不下雨，我們將去購(gòu)物。You can pass the exam if you study hard.如果你努力學(xué)習(xí)，你就會(huì)通過(guò)考試。3條件狀語(yǔ)從句的時(shí)態(tài)。若主句為將來(lái)時(shí)態(tài)或是含有情態(tài)動(dòng)詞的句子或祈使句，則條件狀語(yǔ)從句用一般現(xiàn)在時(shí)。eg：He will not leave if it isnt

3、fine tomorrow.如果明天天氣不好，他就不會(huì)走。(主句用一般將來(lái)時(shí)，從句用一般現(xiàn)在時(shí))If he comes，let me know.如果他來(lái)，讓我知道。(主句是祈使句，從句用一般現(xiàn)在時(shí))單元同步語(yǔ)法強(qiáng)化訓(xùn)練一、用括號(hào)中所給單詞的適當(dāng)形式填空。1You _(look)younger if you _(wear)this new dress.2If we _(get)up late，we _(have)no time for breakfast.3If there _(be)a fire，I _(call)119 for help.4Susan _(come)if you _(have

4、)a birthday party.5If I _(be)free tomorrow，I _(visit)my aunt.will lookweargetwill haveiswill callwill comehaveamwill visit二、單項(xiàng)選擇。6If she _ a car，she will drive to work every day.Abuys BboughtCwill buy Dis buying7We _ swimming together if he comes this afternoon.AgoBwentCgoingDwill go8What _ if the t

5、eacher knows the facts tomorrow?I dont know.Ahappens BhappenedCwill happen DhappeningC AD9If you take part in the game，you _ a good time.Ahave Bwill haveChaving Dhad10I will give him the book if I _ him next week.Ameet BmetCmeeting Dwill meet11Aunt Lucy will tell us something about her trip to Austr

6、alia when she_back.(2014，重慶)Acomes BcameCwould come Dwill comeBAA三、根據(jù)漢語(yǔ)完成句子。12如果你感覺(jué)累，就打電話叫我來(lái)替換你。_，please call me to take your place.13如果我吃太多食物，我會(huì)變胖的。If I eat too much food，_.14如果我們跑得快，就能趕上最后一班公交車(chē)。If we run fast，_.15如果她問(wèn)你，你會(huì)告訴她答案嗎？Will you tell her the answer _?16如果他一個(gè)人獨(dú)自生活，他將養(yǎng)一只狗。If he lives alone,_

7、.If you feel tiredI will get fatwe will catch the last busif she asks youhe will keep a dog1upset 形容詞，意為“心煩的；沮喪的”。eg：He was upset after the exam.考試后他很失望。2advice 是不可數(shù)名詞，意為“建議；勸告”，若表示一條或幾條建議或勸告，要借用piece。eg：some advice一些建議two pieces of advice兩條建議單項(xiàng)選擇。1He felt _after his father died.AangryBupsetCcareless2I have some problems with my English writing.Can you give me some_？Aadvice Bdecisions Cinformation3He often goes home by _after 11：30 pm.There are no buses.Afeet Bbuses CtaxiBAC安全小貼上課間活動(dòng)注意安全