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明天考英语,In such a fierce competition,a person has to make ever

来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:英语作业 时间:2024/07/11 19:41:56
明天考英语,
In such a fierce competition,a person has to make every effort if he ______.
A.has succeeded B.is to succeed C.would succeed D.will succeed
You look very tired.You ____ late last night.
A.needn’t sit up B.didn’t need to sit up C.shouldn’t sit up D.needn’t have sat up
明天考英语,In such a fierce competition,a person has to make ever
In such a fierce competition,a person has to make every effort if he ______.
A.has succeeded B.is to succeed C.would succeed D.will succeed
答案为B if he is to succeed的意思是“如果他一定要成功”,这是一种常用结构,全句“在这样激烈的竞争中,一个人如果一定要成功,就得全力以赴”.再如You must water the flowers if they are to survive.这些花如果一定要活下来,你就得给它们浇水.
You look very tired.You ____ late last night.
A.needn’t sit up B.didn’t need to sit up C.shouldn’t sit up D.needn’t have sat up
答案为D,但最好应是“shouldn't have sat up本不该熬夜的”,选D则为“你看上去很累,昨晚你本不必熬夜的”,本题考查情态动词的完成式,表示对过去某一行为的某种语气.
再问: be to 不是和should的意思一样的吗?老师说的。
再答: 老师说得很好,是相似的,此题用should也对。should更多的侧重于“竟然,万一”之意,如You'd better take an umbrella if it should rain.你最好带把伞,以防天万一下雨。 如果你不明白可以再追问我。