We are busy these days． In those days the workers had a hard time．We are busy these days．In those days the workers had a hard time．我在一篇文章中看见这2句话后面一句我明白需要加介词in我就是不明白为什么不能说

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We are busy these days． In those days the workers had a hard time．We are busy these days．In those days the workers had a hard time．我在一篇文章中看见这2句话后面一句我明白需要加介词in我就是不明白为什么不能说
We are busy these days． In those days the workers had a hard time．
We are busy these days．
In those days the workers had a hard time．我在一篇文章中看见这2句话
后面一句我明白需要加介词in
我就是不明白为什么不能说 We are busy in these days
为什么第一句不加in介词的

We are busy these days． In those days the workers had a hard time．We are busy these days．In those days the workers had a hard time．我在一篇文章中看见这2句话后面一句我明白需要加介词in我就是不明白为什么不能说
首先第一句话We are busy these days,意为这些天我们很忙.只是粗略地指出了一个时间段.
但是第二句话 In those days the workers had a hard time．意为在那些天里工人们都很辛苦.强调了一个特定的时间段.

状语要放在句子前 要加介词

这个很口语的问题，拿中文来说：“我们这几天很忙”和“我们在这几天里很忙”是一个意思，只不过后句强调了一下状语，通常情况下没必要的话说前一句就成

第一句加了in的话就是一个词组了，be busy in doing sth 是忙于做某事的意思。而不加in的话就是单纯的be busy 忙的 ，be相当于一个谓语，busy是表语。主系表也可以是一个完整的句子。there只是修饰下说明是这些天，你把它去掉也没关系。

we are busy ( )our lessons these days.a ,prepare!b,preparing c,to prepare d,prepared we are busy (preparing )our lesson these days括号中为什么填ING形式 busy,these,are,very,today,employees组成 we are quite busy now中busy什么意思? We are ____(busy)this term We are busy on weekdays.翻译 sometimes we are busy and sometimes we are old We are very busy.we are studying for e______ These days they are busy ( ) the farm work填介词 These housewives are very busy.(变为一般疑问句） we are busy ( )our lessons these days.a ,prepare!b,preparing c,to prepare d,prepared大哥大姐帮忙分析一下,为什么选B, The teachers are busy preparing the exams these days .the teachers are busy_______the exams these days the teachers are busy _______the exams these days We are busy these days． In those days the workers had a hard time．We are busy these days．In those days the workers had a hard time．我在一篇文章中看见这2句话后面一句我明白需要加介词in我就是不明白为什么不能说 we are having lovely weather these days We are interesting in these animal 改错 根据句意及首字母提示填入正确的单词They are too busy these days and they want to r____for some time.I like dolphins.They are f____to people.A______are our friends.We should protect(保护) them. We are busy ____(do) our homework this afternoon. 填空 we are very busy ( )our homework now