作业帮选择题(时态的用法)
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/12 20:11:53
Shirley _ a book about China last year . but I don't know whether she has finished it A has written B wrote C had written Dwas writing 我选 A 答案为D Has Jack finished his homework yet? i've no idea,But he _it the whole afternoon Awould B was doing C did D had done 我选Ｄ 答案为Ｂ
解题思路：
解题过程：
Has Jack finished his homework yet?
i've no idea,But he _it the whole afternoon
Awould B was doing C did D had done
答案为Ｂ.
A. would do 表示过去的习惯性动作.即过去经常发生的动作. 故不选.
B. was doing. 表示在过去的那段时间(in the whole afternoon)正在发生的
事. 是答案.
C. did 不可用于一段时间.
D. had done , 只有当表过去的过去时才能用.
选B，表示他整个下午都在持续作一个动作，而说话的时候，这个持续动作已经结束
最终答案：略
解题过程：
Has Jack finished his homework yet?
i've no idea,But he _it the whole afternoon
Awould B was doing C did D had done
答案为Ｂ.
A. would do 表示过去的习惯性动作.即过去经常发生的动作. 故不选.
B. was doing. 表示在过去的那段时间(in the whole afternoon)正在发生的
事. 是答案.
C. did 不可用于一段时间.
D. had done , 只有当表过去的过去时才能用.
选B，表示他整个下午都在持续作一个动作，而说话的时候，这个持续动作已经结束
最终答案：略