Units 19, Module 7 重点点击
【考点考例一】 stay的用法
Emergency line operators must always calm and make sure that they get all the information they need to send help. (2020湖北)
A. grow
B. appear
C. become
D. stay
【知能进阶】
stay用作系动词，表示“保持……状态”，后接形容词、分词作表语。

如：The shop stays open till eight o’clock.
The door stayed closed when I came back.
【能力拓展】
连系动词有一定意义，它们要与其后做表语的形容词、名词或介词(短语)一起构成合成谓语。

系动词按意义可分为三类：
一、感官类系动词：appear, seem, look, feel, smell, sound, taste等。

如：
This flower smells very sweet.
This kind of cloth feels very soft.
二、保持类系动词：stay, keep, remain, be 等。

如：
He always keeps silent at meeting.
This bar often stays open till twelve at night.
三、变化类系动词：become, turn, get, go, fall, come, grow, turn out等。

如：
The weather gets warmer and warmer.
Food can go bad easily in summer.
【实例对接】 To stay dedicated, you need to keep in mind why you are learning English. (P6)
【考例答案】 D
【考点考例二】 whether...or...的用法
—Dad, I’ve finished my assignment.
—Good, and you play or watch TV, you mustn’t disturb me. (2020上海)
A. whenever
B. whether
C. whatever
D. no matter
【知能进阶】
whether…or…表示“不论……还是……”，whether引导让步状语从句。

如：Whether you can see the moon or not, it is always round.
You may rely upon my help, whether others help you or not.
【能力拓展】
if和whether都可译为“是否”，二者引导宾语从句时通常可以互相替换，口语中多用if代替whether。

例如：Ask if/whether he plans to come to the meeting. 而以下几种情况中, 只能用whether：
1. 强调两方面的选择，特别是句中有or not时。

如：
Let me know whether you can come or not.
2. 宾语从句前置时。

如：
Whether this is true, I can’t say.
3. 引导主语、表语、同位语从句时。

如：
Whether the football game will be played depends on the weather. （主语从句）
The question is whether he can do it. （表语从句）
The question whether we should go with them must be decided at once. （同位语从句）
4. 在介词之后作介词的宾语时。

如：
I haven’t settled the question of whether I’ll go back home.
5. 与不定式连用。

如：
Whether to go or stay is still a question.
【实例对接】 Quality input ensures quality output, whether it is speaking or writing. (P6)
【考例答案】 B。