they had finished 和they finished有什么区别?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/10 03:15:36

they had finished 和they finished有什么区别?
最好有专业的英语老师
50. At the end of last month, they _____ thirty percent of the production plan.
A、will finish
B、have finished
C、had finished
D、finished
选哪个?为什么?

答案：D
翻译：在上个月末,他们完成了30%的生产计划.
解析：
1 由于时间是在上个月末,是过去时间,所以排除AB.
2 一般过去时态是指“在过去某个时间发生的动作或存在的状态,通常与表示过去的时间状语,如yesterday,last night等连用”.这里的 At the end of last month是过去时间,所以只要用一般过去时态.
3 过去完成时(past perfect)表示：在过去某一时间或动作之前已经发生或完成了的动作或状态,它表示句子中描述的动作发生在“过去的过去”.比如：We had learned over two thousand English words by the end of last term.
4 如题目的at the end of 改成了 by the end of,正确答案就选C.

they had finished 和they finished有什么区别? finished their job,they had a rest they finished their homework They finished the work____. have finished和had just finished什么意思 They had finished all the work _ yesterday morning Be ill,she went home.和Having finished their work ,they had a Finished to do 与Finished doing 有什么区别? have finished to do和have finished doing有什么区别? They finished their homework_____ (final). They have finished their ____ They went home after they had finished their homework.（用not.