早教吧作业答案频道 -->英语-->
英语语法:为什么选b?不是since后用过去时吗?()somemorecasesofH7N9havebeenfound,moreresearchhashasbeendoneonit.A.WhenB.SinceC.IfD.Whether
题目详情
英语语法:为什么选b?不是since后用过去时吗?
( ) some more cases of H7N9 have been found,more research has has been done on it.A.WhenB.SinceC.IfD.Whether
( ) some more cases of H7N9 have been found,more research has has been done on it.A.WhenB.SinceC.IfD.Whether
▼优质解答
答案和解析
Since 后面不一定是接过去式的,since可以接完成时态,表示自……以来,并且以后还会这样
这里表达的是 自从H7N9案例被发现以来,更多的研究在这方面展开了
这里表达的是 自从H7N9案例被发现以来,更多的研究在这方面展开了
看了 英语语法:为什么选b?不是s...的网友还看了以下:
53.My mother is a great cook and we __ never get 2020-05-14 …
请教英语倒装句1)Not only you but also ____ fond of music 2020-05-16 …
I agree with most of what you said,but I don't ag 2020-05-16 …
They have a lot of rules at their house A:SO do I 2020-05-16 …
请问怎么选?I It"s lovely I like()A:it B:one C:you 2020-05-17 …
英语有关情态动词的问题,1.You(D)have the book as soon as I fi 2020-05-17 …
英语语法:为什么选b?不是since后用过去时吗?()somemorecasesofH7N9hav 2020-06-02 …
-I'maspoorasyou.Means.--.A.I'mnotasrichasyou.B.I' 2020-07-20 …
I'dlikeeggandchicken.A.some;anB.a;someC.an;someD. 2020-07-26 …
选修课i/n表示n选i;否则表示按学分选修,数值为选修所需学分数是什么意思?是不是可以考虑为要不选6 2020-11-03 …