高中英語語法 條件狀語從句ppt課件.ppt

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1、條件狀語從句,明桑桑,1,時間狀語從句 地點狀語從句 條件狀語從句 目的狀語從句 結(jié)果狀語從句 原因狀語從句 讓步狀語從句 方式狀語從句 比較狀語從句,,條件狀語從句的引導詞 條件狀語從句的時態(tài)問題 條件狀語從句的省略問題（分詞做條件狀語）,,1.If真實條件句 2.If非真實條件句 3.其他引導詞,,狀語從句,考點可結(jié)合題型： 語法填空題（1-3空） 翻譯與寫作 長難句分析,2,語法題考頻分析,,3,If,If 真實條件句（陳述語氣） If you read the book, you will be interested in it. 非真實條件句（虛擬語氣） If I were you

2、, I would take his advice.,4,a. 時態(tài) 主句一般將來時，從句一般現(xiàn)在時(主將從現(xiàn)) If the museum charges for entry, a lot of people wont be able to visit it. If your dog is depressed, he probably ____ more exercises. A. will need B. needed C. need D. needs 主句用現(xiàn)在時：表示此事任何時候都是可能的,尤其是現(xiàn)在。 主句用將來時：表示此事將來的可能性。 If shes travelling abr

3、oad on business, she always phones me every evening. Shall we go out if the weathers good?,5,If,b. 句型 If you work harder, you will succeed. Work harder, and you will succeed. Work harder, or you wont succeed. Working harder, you will succeed. 可與if條件狀語從句進行轉(zhuǎn)換的句型： 1. 祈使句/名詞短語，and/or+簡單句 2. 分詞，主句（分詞做條件狀

4、語）,6,If you give me somewhere to stand, I will move the earth.,Give me somewhere to stand, and I will move the earth.,Have an aim in your life, or your energies will be wasted.,If you have an aim in your life, your energies wont be wasted.,If you dont have an aim in your life, your energies will be

5、wasted.,Give me somewhere to stand, or I wont move the earth.,Given somewhere to stand, I will move the earth.,,,,,,句型轉(zhuǎn)換：,7,選擇題：,Start out right away, _____youll miss the first train. and B. but C. or D. while _____, and Ill get the work finished.(06重慶) Have one more hour B. One more hour C. Give

6、n one more hour D. If I have one more hour,C,B,8,翻譯與寫作：,如果我將不勝感激。,翻譯： 如果您能幫助我得到票的話，我會非常感激。,寫作： 主題：給學校校報編輯、社區(qū)、某項活動提建議。結(jié)尾句可用。 如果你能考慮我的建議，我將不勝感激。 I would appreciate it if you could take my suggestions into consideration.,Id appreciate it if,Id appreciate it if you could help me get a ticket. If you cou

7、ld help me get a ticket, Id appreciate it.,9,翻譯與寫作：,如果該怎么辦？,(15虹口二模)如果你忘記通知他面試時間了該怎么辦？,What if you forget to inform him of the time for the interview?,What if,10,If,d. if only vs. only if if only 但愿，要是就好了 表示一個不可能實現(xiàn)愿望，要用虛擬語氣。 only if 只有 等于only on condition that，從句用陳述語氣。 Only if you heat ice does it

8、turn to water. If only I knew!,只有當你給冰加熱，它才會變成水。,要是我知道該多好。,11,_____we take steps to deal with this problem can we avoid a severe water shortage later on. If only B. As long as C. When only D. Only if,選擇題：,D,If we take steps to deal with this problem, we can avoid a severe water shortage later on.

9、Only放在句首，句子要用部分倒裝。 Only if we take steps to deal with this problem can we avoid a severe water shortage later on.,12,unless,unless=if not 如果不，除非 (14虹口二模)如果不能獨立找出提高學習效率的方法，你就很難取得令人滿意的成績。(unless) It is very difficult for you to gain satisfactory achievements unless you find out the method of improving

10、 the learning efficiency by yourself. unless能作為介詞使用，相當于except。 Nothing will come out of it unless disaster. 這種事除了引起災(zāi)禍之外不會有什么結(jié)果。,13,in case,in case 目的狀語從句，多置于句中，為將來的情況做必要的防備 Ill bring an umbrella in case it rains. 我會帶把雨傘去，（目的是）以防會下雨。 條件狀語從句，多置于句首，等于if it happens that。 In case I forget, please remind

11、me of my promise. 如果我忘了，請?zhí)嵝盐宜龅某兄Z。（只有我忘了的情況下才提醒我。）,“萬一，如果”,“以防”,14,（14閘北二模）萬一家具在大火中毀掉了，保險公司是否會支付所有的損失？（in case）,Will the insurance company pay for all the damages in case the furniture is destroyed in the fire？,15,so/as long as , on condition that,表示只要，條件是 As/So long as we dont lose heart, well find

12、 a way to overcome the difficulty. You may use the room on condition that/ so long as you clean it afterwards.,16,Providing/provided (that), supposing/suppose (that), given (that),如果，只要，假如 Given that they are inexperienced, theyve done a good job. 考慮到他們?nèi)狈?jīng)驗，他們的工作已做得很好了。 Provided/Providing (that) we

13、invite him, he would surely come to dinner. 假如我們邀請他的話，他肯定會來吃飯的。 Suppose/Supposing we cant get enough food, what shall we do? 假設(shè)我們弄不到足夠的食物，那我們怎幺辦？（僅用于疑問句）,17,判斷句子邏輯關(guān)系為條件 條件狀語從句的引導詞： 1空：if , unless 2空：in case, providing/provided (that), supposing/suppose (that), given (that) 3空：so long as, as long as,

14、 on condition that,18,After only six months he was due for a raise ____ this assessment was satisfactory.(14黃浦一模) You can fit self care into your weekly routine ____ ____ ____ you prioritize(優(yōu)先考慮). (14楊浦一模) He did so just to give her those extra few precious moments of life, ___ ___ I was careless e

15、nough to step on her.(14閔行二模),if,in case,as/so long as,19,（14崇明一模 ）在上下班高峰時間，倘若你不想陷入交通堵塞，何不嘗試乘坐地鐵？(try),（14徐匯一模）如果雙方在這些事務(wù)上能達成共識，就有可能在新的領(lǐng)域進一步合作。（If...）,If you dont want to be caught in the traffic jam in rush hours, why dont you try taking the subway?,If both the parties can agree on these issues, they are likely to further cooperate（have further cooperation）in the new field.,20,THANKS,21,此課件下載可自行編輯修改，供參考！ 感謝您的支持，我們努力做得更好！,22,