大学英语四级语法大全之时态一致

11.27 时态一致

四级秋季直通车PLUS

新东方热报课程
讲师：王江涛、董仲蠡

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1) 如果从句所叙述的为真理或不变的事实，则永远用现在时。

At that time, people did not know that the earth moves.

He told me last week that he is eighteen.

2) 宾语从句中的助动词ought, need, must, dare 时态是不变的。

He thought that I need not tell you the truth.

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