英语中特殊句型之省略省略
为了使讲话和行文简洁，句中某些成分有时可省略。省略可分以下几种情况：
（一）简单句中的省略
1、省略主语：祈使句中主语通常省略。其它省略主语多限于少数现成的说法。
e.g. (I) Thank you for your help.（括号内为省略的词语，下同）
(I) e you tomorrow. (It) Doesn't matter.
2、省略主谓语或主谓语的一部分。
e.g. (There is) No smoking. (Is there) Anything wrong? Why (do you) not say hello to him?
◆3、省略作宾语的不定式短语，只保留to。
e.g. ---- Are you going there?
---- I'd like to (go there).
He did not give me the chance, though he had promid to (give me the chance).
【注意：】如果该宾语是be动词或完成时态，则须在to之后加上be或have。
e.g. ---- Are you an engineer?
---- No, but I want to be.
---- Did you do him a favor ?
---- No, I would like to have but I was too busy .
4、省略表语。
e.g. ---- Are you thirsty? ---- Yes, I am (thirsty).
5、同时省略几个成分。
e.g. Let's meet at the same place as (we met) yesterday.
---- Have you finished your work?
---- (I have) Not (finished my work) yet.
（二）并列句中的省略
两个并列分句中，后一个分句常省略与前一分句中相同的部分。
e.g. My father is a doctor and my mother (is) a nur.
I study at college and my sister (studies) at high school.
（三）主从复合句中的省略
1、主句中有一些成分被省略。
e.g. (I'm) Sorry to hear that you are ill.
(It is a) Pity that he misd such a good chance.
2、省略了一个从句或从句的一部分，用so或not（切不可用it或that）代替。
e.g. ---- Is he coming back tonight? ---- I think so.
---- Is he feeling better today? ---- I'm afraid not.
这种用法常见的有：How so? Why so? Is that so?
I hope/guess/think/believe so. He said so 及I suppo not. I believed not. I hope not. I guess not 等。（但I don't think so比I think not更常用）。
（四）其它省略
☆1、连词that的省略：
①、宾语从句中常省略连词that，但也有不能省略的情况（参看"名词性从句"等有关部分）。
②、在定语从句中，that在从句中作宾语时可省略。
③、引导主语从句、同位语从句等的连词that一般不可省略。
☆2、不定式符号to的省略
①、并列的不定式可省去后面的to。
e.g. I told him to sit down and wait for a moment.
②、某些使役动词（如let, make, have）及感官动词（如e, watch, notice, hear, feel, look at和listen to等）后面作宾语补足的不定式一定要省去to，但在被动语态中须把to复原。
e.g. ---- I saw the boy fall from the tree. ---- The boy was en to fall from the tree.
☆③、介词but/except前若有动词do或do 本身的各种时态，后面的不定式不带to。（前有do 后无to）
e.g. The boy did nothing but play.
I have no choice but to accept the cruel reality.
3、在某些状语从句中，从句的主语与主句主语一致时，可省去"主语 + be"部分。（参看"状语从句"有关部分）
4、连词if在部分虚拟条件句中可省略，但后面的语序有变化（参见"倒装句"有关部分）
5、主句与从句各有一些成分省略。
e.g. The sooner (you do it), the better (it will be).
