stop to do 和 stop doing 有什么区别？中考常考的 8 组"长得像"短语一次分清
引言
中考短语题里最容易丢分的，不是那些没背过的，而是"长得像"的短语——看着差不多，意思完全不同。stop to do 和 stop doing 就是经典例子。
这篇文章把中考最常考的八组易混短语放在一起对比，一次分清。
第一组：stop to do vs stop doing
```text
stop to do sth. 停下来去做另一件事
stop doing sth. 停止正在做的事
```
```text
He stopped to smoke. 他停下来（开始）抽烟
He stopped smoking. 他戒烟了
```
判断：to do 是"要去做"，doing 是"正在做"。
第二组：remember to do vs remember doing
```text
remember to do sth. 记得要去做（还没做）
remember doing sth. 记得做过了（已经做了）
```
```text
Remember to lock the door. 记得锁门（还没锁）
I remember locking the door. 我记得锁过门了（已经锁了）
```
第三组：forget to do vs forget doing
```text
forget to do sth. 忘记要去做（没做）
forget doing sth. 忘记做过了（做了但忘了）
```
```text
Don't forget to call me. 别忘了给我打电话
I forgot calling you. 我忘了已经给你打过了
```
第四组：used to do vs be used to doing
```text
used to do sth. 过去常常做（现在不做了）
be used to doing sth. 习惯于做
```
```text
He used to smoke. 他过去抽烟（现在不抽了）
He is used to getting up early. 他习惯早起
```
第五组：in time vs on time
```text
in time 及时（赶得上）
on time 准时（按约定时间）
```
```text
We arrived in time for the meeting. 我们及时赶到了会议
The train left on time. 火车准点发车
```
第六组：in front of vs in the front of
```text
in front of 在……（外部的）前面
in the front of 在……（内部的）前部
```
```text
There is a tree in front of the classroom. 教室前面有棵树（外面）
The teacher stands in the front of the classroom. 老师站在教室前部（里面）
```
第七组：look for vs find
```text
look for 寻找（强调过程）
find 找到（强调结果）
```
```text
I'm looking for my key. 我在找钥匙（还没找到）
I found my key. 我找到钥匙了
```
第八组：be good at vs be good for
```text
be good at 擅长
be good for 对……有益
```
```text
She is good at English. 她擅长英语
Vegetables are good for you. 蔬菜对你有益
```
总结
八组易混短语的核心区别：
```text
to do = 要去做（还没做）
doing = 正在做/做过了
in time = 及时
on time = 准时
in front of = 外部前面
in the front of = 内部前面
```
```text
今日小抄：
stop to do 停下来去做
stop doing 停止做
used to do 过去常常
be used to doing 习惯于
on time 准时
in time 及时
```