發(fā)布時(shí)間: 2016年04月20日
大學(xué)英語四級語法大全之時(shí)態(tài)一致
11.27 時(shí)態(tài)一致
1) 如果從句所敘述的為真理或不變的事實(shí),則永遠(yuǎn)用現(xiàn)在時(shí)。
At that time, people did not know that the earth moves.
He told me last week that he is eighteen.
2) 賓語從句中的助動(dòng)詞ought, need, must, dare 時(shí)態(tài)是不變的。
He thought that I need not tell you the truth.
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