英语翻译The assignment for today is to write a summary which the major subjects in this chapter are to be covered.还有那个are to be 是什么啊,直接are covered不行吗?是 in which 不是which ,打漏了

英语翻译The assignment for today is to write a summary which the major subjects in this chapter are to be covered.还有那个are to be 是什么啊,直接are covered不行吗?是 in which 不是which ,打漏了
英语翻译
The assignment for today is to write a summary which the major subjects in this chapter are to be covered.还有那个are to be 是什么啊,直接are covered不行吗?
是 in which 不是which ,打漏了

英语翻译The assignment for today is to write a summary which the major subjects in this chapter are to be covered.还有那个are to be 是什么啊,直接are covered不行吗?是 in which 不是which ,打漏了
be to do something (formal)
a) used to talk about arrangements for the future 用作谈论未来的安排:
例：1. Audrey and Jimmy are to be married in June.
2. Two men are to appear in court on charges of armed robbery.
b) used to give an order or to tell someone about a rule(用来给命令或告诉某人一个规定) :
例：1. You are to wait here in this room until I return.
2. All staff are to wear uniforms.
c) used to say or ask what someone should do or what should happen (用来告诉某人应当做什么或会发生什么):
例：1. What am I to tell her?
2. He is not to be blamed.
d) used to ask how something can be done (用来问某事应当怎么做） :
例：How are we to get out of the present mess?
你的句子中的are to be covered应当属于b的情况,因为这是老师布置作业的一个规定.而且,主语句也是这种结构：The assignment for today is to write..., 你这个能够题解,也就能理解are to be covered (只是被动态而已).
至于这个in which就更简单,因为前面的summary在后面的定语从句中是作状语（如果把句子拆分的话就成了：The assignment for today is to write a summary. In the summary the major subjects in this chapter are to be covered.）,所以是in which (有时用where).如果在定语从句中是作主语或宾语的话就用which或that.

are to be表示将来的状态，are covered表示目前的状态，这篇总结还没有写呢～

The assignment for today is to write a summary in which the major subjects in this chapter are to be covered.
今天的任务是写一个总结，它要包括本章的主要内容。
are to be covered = must be covered

因为还没教到，所以are to be covered
句子是说 今天的作业是要写这章里将会讨论到的重要主题的摘要那in which是什么意思呢？就是表示在里面的意思， 我给你几个句子 The direction in which a car moves depends on the steering wheel We wrote a report,in which, we have ass...

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因为还没教到，所以are to be covered
句子是说 今天的作业是要写这章里将会讨论到的重要主题的摘要

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