by加过去时间点谓语用什么时态?加将来时间点呢?
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by加过去时间点谓语用什么时态?加将来时间点呢?
请分别举一个例子并且简单阐述理由.
请分别举一个例子并且简单阐述理由.
y经常是与完成时联系在一起,具体什么完成时取决于by之后的时间,例如by 2013是过去完成时,by now是现在完成时,by 2015是将来完成时
by+时间”与动作性强的动词连用时,主句多用于完成式.by 后的时间可指现在、 过去或将来时间点.如:By the time he was fourteen years old,he had learned maths all by himself.到14岁的时候,他就已经自学了数学[SB 2B p.2].I shall have finished it by the time you come back.你回来以前我就把它做完了[1].By the end of the match,they had kicked two goals and we had kicked four.[JB p91] 比赛结束时,他们踢进了2分我们踢了4分.They must have finished their work by this time.他们现在一定已经完成工作了[2].但是,上述情况中当时间为将来时,主句动作发生在从句动作之后时,主句动词可用一般时态.如:If you're not better by then,I'll take you to see the doctor.[JB3 p.85] 如果到那时还不好些,我就带你去看病.Can you finish this by tomorrow?在明天以前你能做完这件事吗[1]?间或有用进行式的.如:By the end of the first week the head of the department was saying very nice things about me.第一周末时系主任给我多多美言了几句 [3].
by+时间”与动作性强的动词连用时,主句多用于完成式.by 后的时间可指现在、 过去或将来时间点.如:By the time he was fourteen years old,he had learned maths all by himself.到14岁的时候,他就已经自学了数学[SB 2B p.2].I shall have finished it by the time you come back.你回来以前我就把它做完了[1].By the end of the match,they had kicked two goals and we had kicked four.[JB p91] 比赛结束时,他们踢进了2分我们踢了4分.They must have finished their work by this time.他们现在一定已经完成工作了[2].但是,上述情况中当时间为将来时,主句动作发生在从句动作之后时,主句动词可用一般时态.如:If you're not better by then,I'll take you to see the doctor.[JB3 p.85] 如果到那时还不好些,我就带你去看病.Can you finish this by tomorrow?在明天以前你能做完这件事吗[1]?间或有用进行式的.如:By the end of the first week the head of the department was saying very nice things about me.第一周末时系主任给我多多美言了几句 [3].
by加过去时间点谓语用什么时态?加将来时间点呢?
by加将来时间点 用什么时态
by加现在或过去的时间点,句中谓语分别用什么时态
by加时间点的时态
by加时间点是什么意思呢,好像还有个in加时间点,还是on加时间点,在什么时态中用>
by的用法,by后面加将来的时间,用什么时态?
since加时间点,时间点的时态应该是什么
by the time加现在时,主句用什么时态?加将来时间,主句用什么时态?
by + 时间点用于什么时态
by the time是点时间,还是段时间,所以用一般过去,还是完成时态
英语时态,从过去一个时间点持续到过去另一个时间点用什么时态?
英语里,将来时态的时间状语若是“in加一段时间”,那谓语动词一定要用延续性动词吗?