(4)宾语从句的时态
宾语从句的谓语动词时态通常受到主句时态的影响
1.(主现,从不变)主句为一般现在时态,宾语从句根据需要选择时态。
Eg:I know that you did not finish your homework yesterday.
2.(主过,从过)主句为一般过去时态,宾语从句选择与过去有关的时态。
Eg:he told me that he had been to America .
3.(主过,从真理现)主句为一般过去时态,宾语从句如果是客观事实和永久不变的真理,用一般现在时态。
Eg:My mother once told me that the sun rises in the east and sets in the west.
(5)运用虚拟语气的情况
建议 suggest 、advise、propose;
要求demand 、desire、request;
决定 decide;
命令 order、command、require;
坚决主张 insist;
等动词后跟宾语从句,用(should)+v.(虚拟语气)
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