1. 基本含义
Decide to do something 表示“决定去做某事”,后接动词不定式(to + 动词原形)。
- I
decided to studyEnglish abroad. - She
decided to quither job.
Decide on something 表示“就某事做出决定”,后接名词或名词短语(不能接动词)。
- We
decided ona new car. - They
decided onFriday for the meeting.
2. 结构对比
- decide to do + 动词原形(表示动作)
- decide on + 名词/代词/动名词(表示选择对象)
✅ 正确:
• He decided to travel.
• He decided on traveling.(较少见,但语法上可接受)
• He decided on a trip.
❌ 错误:
• He decided on to travel.(× 不能混用)
3. 使用场景建议
在日常英语中,decide to do 更常见,强调“采取某个行动”;而 decide on 多用于“从多个选项中选定一个”。
- When you have several options, you decide on one.
(当你有多个选项时,你从中选定一个。) - When you make a personal resolution, you often decide to do something.
(当你下定决心做某事时,通常用 decide to do。)
4. 小结
记住这个口诀:
“Decide to do” 是干,“Decide on” 是选。