填 we'll have learned
根据句意,the cours还没有完成,所以the course comes to an end 是将来的事情,by+将来每一个时间点,是用将来完成时的标志,所以要用将来完成时will have done.那by the time 是表将来咯。那这个词组在这个句中的具体意思是什么?by是不是有两种用法,一个是by+过去时间,用过去完成时,第二个是by+将来时,用将来完成时吗?"by the time "是“到。。。时间为止”的意思。By the time (when 可以省略)the course comes to an end 是“到这个课程结束为止(但现在还没有结束)”。by三种用法:1,by now / up to now / so far,用现在完成时;2,by+过去某个时间点,用过去完成时;3,by+将来某个时间点,用将来完成时。 【俊狼猎英】团队为您解答。
By the time when the course comes to an end,( )a lot about computer.
By the time when the course comes to an end,( )a lot about computer.
(we'll have learned / we'll learn / we're learning / we have learned)
这题应该选什么,说出正确答案的理由和其他三个选项为什么不选的理由,
(we'll have learned / we'll learn / we're learning / we have learned)
这题应该选什么,说出正确答案的理由和其他三个选项为什么不选的理由,
英语人气:637 ℃时间:2020-04-05 16:30:24
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