Question

2个英语选择题

1 - why don't we take a little break?
- Dinf't we just have ( C) ?
A it B that C one D this 为什么选C ABD为什么错误

2. SO you were in the shop ( A ) you heard a strange sound ,right?
A when B while 为什么选A 而B是错误的？

Answer 1

1. a little break 是泛指休息一下。
而ABD都是特指，只有one是泛指，为了跟问句一致，所以选C咯。

2. 时间状语从句，用when引导，这个不用解释吧，而while一般接doing 。
你可以还原该问句，
（ ）you heard a strange sound you were in the shop .现在选哪个，一眼就看出来了吧，还看不出来就读一遍吧。

Answer 2

1、休息一下不是一个明确的指代某物，不能用it。你只需要“某一下”休息，用one就行。
2、while是正在什么的时候，一般跟现在进行时连用

Answer 3

one =a +名词哦
I want to buy a MP4.
Haven't you bought one? 我想买一个MP4.——你不是已经买了一个吗？ 泛指。

while 后只能用延续性动词
I was watching TV when he came in.
He came in while/when I was watching TV.
SO you heard a strange sound (while) you were in the shop ,right? 就可以了