高二英语暑假作业：高中英语语法重点难点回顾

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高英语高中英语语法重点难点回顾 (3) 关联词只能用whether不能用if表示“是否”的情况如下: A)在表语从句和同位语从句中。例如： The question is whether the film is worth seeing. The news whether our team has won the match is unknown. B)在主语从句中,只有用it作形式主语时,whether和if都能引导主语从句,否则,也只能用whether。例如： Whether we shall attend the meeting hasn't been decided yet. It hasn't been decided whether(if)we shall attend the meeting. C)在介词之后。(介词往往可以省略)例如： It all depends (on) whether they will support us. D)后面直接跟动词不定式时。 He doesn't know whether to stay or not. E)后面紧接or not 时。 We didn't know whether or not she was ready. F)引导让步状语从句,只能用whether。 Whether you like it or not, you must do it well. G)用if会引起歧义时。例如：Please let me know if you like it. 该句有两个意思：“请告诉我你是否喜欢”。 或“如果你喜欢, 请告诉我。” 用了whether就可以避免。 在下面几种情况下必须用“that”引导定语从句： 1)先行词是不定代词：all, few, little, much, something, nothing, anything等。All that we have to do is to practise every day. 2)先行词被序数词或形容词最高级所修饰。 The first lesson that I learned will never be forgotten. 3)先行词被all, any, every, each, few, little, no, some, 等修饰。 I have read all the book (that) you gave me. 4)先行词被 the only, the very, the same, the last 修饰时。 He is the only person that I want to talk to. 5)先行词既有人又有物时。They talked of things and persons that they remembered in the school. 先行词是表示地点时,要根据从句的谓语动词是及物的还是不及物的。如果是及物的就用that(which),否则用where。 This is the house where he lived last year. This is the house that (which) he visited last year. 用no sooner…than和hardly…when引导的从句表示“刚……就……”。主句中的动词一般用过去完成时,从句用过去时;而且主句一般倒装,把助动词had提到前面。例如：Hardly had I entered the room when I heard a loud noise. 代词作主语时,主谓语序不变。Here it is. Here he comes. 当句首状语为表示地点的介词词组时也常常引起全部倒装。 South of the city lies a big steel factory. From the valley came a frightening sound. 表语置于句首时,倒装结构为“表语+连系动词+主语”。 Present at the meeting were Professor White, Professor Smith and many other guests. Gone are the days when they could do what they liked to the Chinese people. Among the goods are Christmas trees, flowers, candles and toys. He has been to Beijing. So have I. Li Wei can't answer the question. Neither can I.

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