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帮我区分以下这几个选项

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/24 17:59:13
老师,请帮我区分一下这个词, will are about to are to are due to 下面2道题一样吗?应该怎么选 .If you ________be in time for the early bus, be sure to get up before five in the morning.
A. will B. are about to C. are to D. are due to If the kind of flowers _____ survive through the winter,they must be moved into the room A. are to B. are about to C. will D. are due to
解题思路: 如下
解题过程:
.If you ________be in time for the early bus, be sure to get up before five in the morning.
A. will B. are about to C. are to D. are due to 选C。 If the kind of flowers _____ survive through the winter,they must be moved into the room. A. are to B. are about to C. will D. are due to 选A。 这两道题主要考查if引导的条件状语从句中的时态和一般将来时的表达。 be to do sth.表示按计划或安排即将发生的动作,后可跟时间状语。可以用于条件从句“如果……想,设想”(接近if ……want to,或if ……should)
  例:Greater efforts to increase agricultural production must be made if food shortage ____________ avoided.
  A) is to be   B) can be   C) will be   D) has been
  答案是A) is to be。全句的意思是:“如果要避免食品短缺,就必须作出更大努力来增加农业产量。 be about to do sth.表示打算或安排即将发生的动作,它通常不与时间状语连用。
will+动词原形表示将来要发生的动作或存在的状态或将来经常发生的动作。
They will see me on Sunday.
I’ll write to every week.

be due to表示“因为”、“由于”之意。如:
He failed due to carelessness.
最终答案:略