if及小知识点.ppt

If it rains tomorrow, we will put off the sports meeting.If I had a chance,I would have a cloned baby.If my brother _ here, everthing would be all right.If you _my advice,you wouldnt have failed.If it _/_/_this evening,they would not go out .错综时间条件句错综时间条件句If you had taken medicine last night,ypu would feel better now.省略省略if 的情况的情况：从句中有were,had 或should,可把if省略，同时把这几个次放到主语之前，构成主渭倒装。If I had time, I would go and help you.If he should come, tell him to ring me up.If I were you, I would not do it.Had I time, Should he come, Were I you, 完全倒装的情况1)表示地点的介词短语放句首，谓语动词常为不及物或系 v2)以here,there.now.then等地点或时间副词开头的句子，谓语动词是be,come,go, remain等，主语又是n时3）副词out,in,up.down.away放开头,主语又是n时4）句子主语部分较长，谓语部分较短或为了强调表语1.From the window came the sound of music.2. Here comes the bus.3.Away hurried the boy.4.Gone are the days when we had nothing to eat.There goes the bellThere she comesThis is the house where I lived two years ago. 这就是我两年前住的那个房子We will start at the point where we left off. 我们将从上次停下来的地方开始。Make a mark where you have any doubts or questions. 在有疑问的地方做一个记号。I found my books where I had left them. 我在我原来放书的地方找到了我的书。定从中常见抽象地点先行词：situation,case,point,scene,stage等 where引导的地点状语从句兼有抽象条件含义, 可放在主句的前面, 而where引导的定语从句则不能。例如:Where there is a will, there is a way. 谚语有志者事竟成。Where there is water, there is life. 有水的地方就有生命。 1。After the war, a new school building was put up _ there had once been a theatre. A. that B. where C. which D. when2。I can still remem ber the sitting-room _ my m other and I used to sit in the evening. A. what B. which C. that D. whereremain 作为动词，均为不及物动词， Some of them have disappeared while others remain today它们中的一些已经消亡，然而另外一些今天仍然存在。Only a few leaves remained on the tree. 树上只剩下几片叶子了 剩下”、“余下”、“遗留”， The children remained out because of the weather由于天气晴朗，孩子们继续呆在室外嬉戏。The Smiths remained there all through the year. 史密斯一家人在那里呆了整年。remain “留下”、“停留”、“呆在”，相当于“stay” remain系动词：“保持”、“仍然是”，“依旧是”，后接形容词、名词、动词不定式、现在分词、过去分词或介词形容词短语作表语，指某人或某事物仍保持某种状态He remained silent. 他保持沉默。It remained a secret. 这仍然是个秘密。A lot of work remained to be done 许多工作还有待完成。Many problems remain to be solved. 有好多问题尚待解决。 It remains to be seen whether you are right. 你是否正确，以后见分晓。 There remains- 仍然存在There are so many problems _ A, remaining to settle B,remained settling C,remaining to be settled D,remained to be settledC