四六级翻译部分涉及语法点及句型

四六级翻译部分涉及语法点及句型——虚拟语气

1. If 条件句，对应主句.

例如：If you knew the truth, you wouldn’t/couldn’t/shouldn’t/mightn’t keep it a secret to the public.

If everything were ready, the company would invest a big sum of money in low-carbon technology development.

例如：If you had taken my advice,/Had you taken my advice, you wouldn’t/couldn’t/shouldn’t/mightn’t have made such a mistake.

例如：If the factory cut down on its production expenses, the sales would/could/should/might be increased.

If the factory should cut down on its production expenses, 或Should the factory cut down on its production expenses,------------

If the factory were to cut down on its production expenses，或Were the factory to cut down on its production expenses,------------

2. But for the English examination, I would / could/ should/ might go to the concert now.

But for the English examination, I would / could/ should/ might have gone to the concert last Saturday.

But for the English examination, I would / could/ should/ might go to the concert tomorrow.(以上句中的but for 也可用without替换，用法同)

3. wish 后虚拟（只与从句所指的时间有关，而与wish的时态无关）

I wish I knew the answer. I wish I were as tall as you. (与现在事实相反的希望，事实上不知道，用did/were)

Tom wishes he hadn’t lost the chance. （与过去事实相反的希望，事实上已经失去，用had done)

I wish she could/would/might change her mind. （与将来事实相反的希望，实际上不可能转变主意，用could/would/might/+do）

4．It is imperative/necessary/vital/important/natural/ strange/impossible/essential/ advisable/desirable/ fundamental that ---do (be done) ---

Sb suggest/ advise/ propose/ require/ request /demand /desire /order /command /insist that------do (be done) ---------

It is/was suggested/ advised/ proposed/ required /requested/ demanded/ desired /ordered/commanded/ insisted that-----do (be done) -----

It is/was sb’s suggestion/advice/ proposal/ requirement/ request/ demand/ desire/order/ command/ insistence that -------do (be done) ---------

例如：It is necessary that we (should) make everything ahead of time.(事先做好一切准备)

We were all for your proposal that he (should) be sent to study further abroad. (去国外进修)

The suggestion that the mayor present the prizes (颁奖) was accepted by everyone.

5. lest, for fear that, in case 之后一律（should）do 或（should）be done

例如：Take good care of yourself lest you catch cold.

6. I think it’s high time we took strong actions against him. (对他采取强硬措施)

区分：It is the 序数词time that ------have done------- 或It was the 序数词time that ------had done------- 表示某人第几次做某事

7. would rather 后虚拟I’d rather you picked me up at the airport today.

I’d rather you had picked me up at the airport yesterday.

I’d rather you picked me up at the airport tomorrow morning.

四六级翻译部分涉及语法点及句型——部分倒装（情态动词，be动词，助动词+主语）

1. 否定副词never, seldom, rarely, hardly, barely, scarcely, little, few, nowhere,否定意义短语under no circumstances/condition, by no means, in no way, in no