四级语法复习之一
动宾一致
英语语法规定，用于宾语的词语应使用它们的宾格。能够用做宾语的词类中只有人称代词有特别的宾格形式，其他词类如名词原形即可用于宾格，无须变化。词与词之间的固定搭配属于英语的惯用法。一些动词与它们用于宾语的名词之间也存在固定搭配现象。
「例如」
to acquire knowledge
获得知识
to get a job
获得工作
to obtain a position
获得工作（语气较庄重）
to achieve success
获得成功
to gain reputation
获得声誉
to attain one's end
达到目的
to do sb. a favor
请帮忙
这类惯用法没有太多的章法可循，只有在平时的阅读中多看，多记。
时态一致
时态一致
1）并列谓语的时态一致。
「例如」Yesterday I went shopping， bought some books and had dinner at a good restaurant.
The soldier looked at him， exchanged glances with his comrade and took out the gun.
2）主从复合句的时态一致。
a）主句为现在时、将来时、现在完成时，宾语从句谓语动词时态按情况而定。
「例如」
I wonder what will happen tomorrow.
I wonder what happened to him yesterday.
I wonder what is happening now outside.
b）主句为过去时态，宾语从句一般用过去时态。如果宾语从句说明的是客观真理，用一般现在时。
「例如」
He told me he made a big mistake.
He told me he would go to Beijing the next day.
He told he had finished his task.
The teacher told students that the earth moves around the sun.（客观真理）
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