Before the first non-stop flig
来源:学生作业帮 编辑:神马作文网作业帮 分类:英语作业 时间:2024/09/22 17:29:52
Before the first non-stop flight made in 1949,it ( ) necessary for all plane to land for refueling.
A.would be
B.has been
C.had been
D.would have been
这道题在考什么?
A.would be
B.has been
C.had been
D.would have been
这道题在考什么?
解题思路: 表示过去某一时间或动作以前已经发生或完成了的动作。它表示动作发生的时间是“过去的过去”。
解题过程:
选C。 句中从句谓语动词所表示的动作发生在1949年,主句谓语动词所表示的情况发生在此之前,所以用过去完成时。
最终答案:如上
解题过程:
选C。 句中从句谓语动词所表示的动作发生在1949年,主句谓语动词所表示的情况发生在此之前,所以用过去完成时。
最终答案:如上
Use the before a specific non-count noun 这before 是什么词性? 副词?
分析英语句子两个This non-stop communication,the experts think,has ma
一道初中英语语法题,that boy __ non-stop for the past hour seems to be
the snow (stop)before I got up this morning.
before crossing the road stop and look both ways 翻译.
Don't get off before the bus stop.
Their school stop on the first day of snowing.翻译
英语翻译before the first application ,press the pump several tim
英语翻译2.shooting star---complete seeing stars before the first
what lesson is before the first break 怎么回答
The rain came to a stop the night before.The fields are stil
1The rain came to a stop the night before.The fields are sti