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

问题描述:

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

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。

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

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