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高中英语语法1.It’s the first time that……….(从句中用现在完成时)
It was for the first time that………(强调句，对状语for the first time进行强调)
It’s(high)time that……..(从句中用过去时或should do)
2.It’sthe same with sb./So it is with sb.
表示某人也如此(用于前句中既有肯定又有否定或两个不同类的谓语动词)
3.…be about to do/be doing……when…….正要做/正在做……就在那时…….
4.A is twice/three times as+原级+as B A是B的两倍/三倍
A is twice/three times the n.of B.A的…是B的两倍/三倍
A is twice/three times+比较级+than B A比B多两倍/三倍
5.It’s a waste of time/money doing/to do…做……浪费时间/金钱
It’s no use/good doing………做……是没有用的
It’s possible/probable/(un)likely that……….很可能……
It makes great/no sense to do……做某事很有/没意义
6.There’s no use/good doing…….做……没有用
There’s no sense/point(in)doing……做……没有意义
There is no need for sth./to do…….没有过必要做……
There is(no)possibility that…………(同位语从句)很可能/没可能……
7.The+比较级……..,the+比较级………越……..,越…….
注意：前半句为从句，用一般现在时代替将来时;
8.Itseems/appears(to sb.)that sb…….在某人看来某人………
=Sb.seems/appears to be/to do/to be doing/to have done……..
It seems/looks as if……….好象/似乎……..
9.It(so)happened that sb.……..某人碰巧……..
=Sb.happened to be/to do/to be doing/to have done…..
10.It issaid/thought/believed/hoped/supposed…….that sb………
=Sb.issaid to be/to do/to be doing/to have done……….
(注意：这种句型里如带动词hope则不能变成简单句，因为无hopesb.to do结构)
12.…….such…….that…….如此…….以致于(引导结果状语从句)
…….such……..as……像……..的这种……(as为关系代词，引导定语从句，在从句里充当主、宾、表)
13.Doyou mind if I do sth.?/Would you mind if I did sth.?你介意我做……吗?
14.Thechance is that……../(The)Chances are that……….很可能…….
15.Check/Make sure/See to it/See that……..(从句中常用一般现在时)确信/务必……..
16.depend on it that……..取决于
see to it that…….负责/设法做到…….
注意：除了except/but/in等介词可以直接接that从句，其它介词后必须用it做形式宾语;
17.It is/was+介词短语/从句/名词/代词等+that………
How/When/Where/Why is/was it that………..?
注意：此句型为强调句，当被强调的为表示人的词时，还可用who连接;强调主语时，从句后的谓语动词应与前面的主语保持一致;注意与定语从句的区别)
18.How is it that……..(这几个句型都表示“怎么会…….?”“怎么发生的?”)
How come+从句?
How does/did sth.come about?(How did it come about that…….?)
如:How come you are late again?
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19.There seems/appears/happens to be/must be/can’t be/is(are,was,were)said to be/is(are,was,were)thought to be…….
表示“.似乎有/碰巧有/一定有/不可能有/据说有/认为有……..”
介词(如of)there being
want/wish/expect there to be要/希望/期待有……..
adj./adv.enough for there to be…….足够…….会有…….
注意：there being/there to be为there be的非谓语形式;It is said/thought that there is/are……=There is/was/are/were said(thought)to be…….如：
Eg:I have never dream of there being such a good chance for me.
It won’t be cold enough for there to be a frost tonight.
20.疑问词+插入语+陈述语序?
Eg:Whodo you think he’ll have attend the meeting?
高中语法分类非谓语动词，情态动词和虚拟语气，特殊句式，定语从句和名词性从句，连词和状语从句，动词的时态和语态，形容词和副词，名词，代词，冠词，介词及习语动词，动词词组（动词的固定搭配），以及情景交际等。
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