>>>>2015年6月英語(yǔ)四級(jí)語(yǔ)法知識(shí)大全 

　　大學(xué)英語(yǔ)四級(jí)考試涉及的語(yǔ)法知識(shí)點(diǎn)多、涉及面寬，對(duì)不少考生來(lái)說(shuō)都是一個(gè)難題。希望通過(guò)本專題的學(xué)習(xí)，考生能對(duì)四級(jí)語(yǔ)法有更全面的掌握。

　　從句中的省略

　　在以as, than, when, if, unless等引導(dǎo)的從句中的省略: 在有些狀語(yǔ)從句中,如果謂語(yǔ)包含有動(dòng)詞be,主語(yǔ)又和主句的主語(yǔ)一致a),或者主語(yǔ)是it b),就常�？梢园褟木渲械闹髡Z(yǔ)和謂語(yǔ)的一部分(特別是動(dòng)詞be)省略掉.

　　Look out for cars when crossing the street.

　　When taken according to the directions, the drug has no side effects.

　　While there he joined in voluntary labour on a project.

　　Although not yet six months old, she was able to walk without support.

　　If not well managed, irrigation can be harmful.

　　Though reduced in numbers, they gained in fighting capacity.

　　This viewpoint, however understandable, is wrong.

　　Enemies, once discovered, were tightly encircled and completely wiped out.

　　She hurriedly left the room as though/if angry.

　　She worked extremely hard though still rather poor in health.

　　Fill in the application as instructed.

　　Whenever known, such facts should be reported.

　　The documents will be returned as soon as signed.

　　He said that no acrobat could ever perform those daring feats unless trained very young.

　　Once having made a promise, you should keep it.

　　If necessary I’ll have the letter duplicated.

　　Fill in the blanks with articles where(ver) necessary.

　　If possible, I should like to have two copies of it.

　　As scheduled, they met on January 20 at the Chinese Embassy.

　　在以than a) 或 as b) 引起的從句中,常會(huì)有一些成分省略.

　　He told me not to use more material than (it is) necessary.

　　We should think more of the collective than of ourselves.

　　They worked with as much enthusiasm as young people (did).

　　He is now a vice-manager, but still often works in the kitchen as before.

　　Their training is free, as is all education.

　　We will, as always, stand on your side.

　　錯(cuò)誤的省略

　　His life is as fully committed to books as anyone I know.

　　While standing there in her nightgown, two bullets struck the wall beside her.

　　一致

　　如果主語(yǔ)是單數(shù),盡管后面跟有with, together with, as well as, as much as, no less than, more than等引導(dǎo)的短語(yǔ),謂語(yǔ)動(dòng)詞仍舊用單數(shù)形式.

　　Terry, along with her friend, goes skating every Saturday.

　　An expert, together with some assistants, was sent to help in this work.

　　The captain, as well as the coaches, was disappointed in the team.

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