反饋

時態一致

時態一致表示句子的時態必須從頭到尾都是一樣的。即：謂語動詞的時態與時間狀語的時態一致；從句的謂語動詞時態與主句保持一致；直接引語的時態和間接引語的時態轉換；

例如：

(1)如果從句所敍述的為真理或不變的事實，則永遠用現在時。

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

He told me last week that he is eighteen.

(2)賓語從句中的助動詞ought, need, must, dare 時態是不變的。

He thought that I need not tell you the truth.

詞條統計