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我英语很烂,我做英语选择题每次都错很多,能不能帮我解释选这个选项的原因,万分感激~

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/15 11:49:00
我英语很烂,我做英语选择题每次都错很多,能不能帮我解释选这个选项的原因,万分感激~
1.Since she was trapped in a lift for about two hours a year ago she ___c___ to get back into one.
A.doesn’t dare B.didn’t dare
C.hasn’t dared D.hadn’t dared 选c是为什么啊,我选的D,
2.The decorator suggested that he ____a__ up a screen on the window to let in fresh air and keep out flies.
A.fix B.fixed (解释选A的原因)
C.fixes D.fixing
1.Since she was trapped in a lift for about two hours a year ago she ___c___ to get back into one.
A.doesn’t dare B.didn’t dare
C.hasn’t dared D.hadn’t dared 选c是为什么啊,我选的D,能否帮我解释一下.
说明:(a)since+从句或短语、for+时间段---用于现在完成时
(b)by+时间点---用于过去完成时
例句:(a)He has not seen her since1990.
He has not seen her since they met last time.
I have been a soldier for three years.
(b)We had learnt 10 English songs by the end of last term.
2.The decorator suggested that he ____a__ up a screen on the window to let in fresh air and keep out flies.
A.fix B.fixed (解释选A的原因)
C.fixes D.fixing
说明:suggest建议,后面多用将来时
所以是:he (would)fix,前面是过去式,后面用过去将来时.并且would 省略了.