现在完成时的时间状语有after 和before吗 _状语

after 和before 引导时间状语从句时具体用法
before 所引导的时间状语从句所表示的动作发生在主句动作之后如果强调主句的动作发生在前主句谓语要用过去完成时
before 引导的从句用一般过去时如不强调动作的先后主句和从句均用一般过去时
如 she worked in shsnghai before she came here.she had studied english for six years before she went to college
另外注意 before 所引导的时间状语从句常表示 .之后才.如果主句是一般将来时从句用一般现在时如 it won't be long before we meet.again 不久我们就会再见面
after所引导的时间状语从句所表示的动作发生在主句动作之前如果强调从句的动作发生在前从句谓语要用过去完成时主句用一般过去时如不强调动作的先后主句和从句均用一般过去时
如 after he did his homework,he went to bed after she had waited for him for an hour ,she started for home.主句是一般将来时 after 从句用一般现在时或现在完成时代替将来完成时如 i 'll write to you after i finish / have finished my work
如果对您有帮助，望采纳 !谢谢！
【现在完成时的时间状语有after 和before吗】

现在完成时的时间状语有after 和before吗

猜你喜欢