by the end of last year用于什么时态

问题描述:

by the end of last year用于什么时态
You must tell him the news as soon as you____him.
A.see.B.sees.C.will see.D.is seeing
It seemed that the old man ____for something over there.
A.looks.B.looked.C.was looking.D.has left

看你想表达什么了.基本时态是过去时.如果想表达 去年年底 已经完成某事,就用过去完成时,想表达去年年底正进行某事,就用过去正在进行时,以此类推.那么这题该怎么做?By the end of last year he_____about 1500 English words.A.learns.B.learned. C.was learning.D.had learned下面的题怎么做? 选A,刚才好像没看到有题目,不好意思哈。You must tell him the news as soon as you____him. A.see.B.sees.C.will see.D.is seeing下面的题,选DBy the end of last year he_____about 1500 English words.A.learns.B.learned. C.was learning.D.had learned根据的你问题,说明你的时态没掌握好,两个解决办法,一是尽快找看关于时态的语法点,边做题边总结自己的心得。第二是根据语义分析,by```是表示到···为止,从中文就可以判断,一般说到···为止,后面就会说···已经怎么怎么样了。时态中,have done 就是表示已经、完成的意思了。然后根据所给时间,在 将来完成、现在完成和过去完成中进行选择。做题重量更要重质,加油!