在英语中，有一些动词后面只能接不定式，不能接动词原形或动词-ing形式。了解这些动词是提高英语语感和写作水平的重要一步。下面是一个简单的口诀，帮助大家记忆这些只接不定式的动词。
“记住这八个，其余皆不定式。”
这八个动词是：afford, agree, aim, appear, arrange, ask, attempt, beg。这些动词后面只能接不定式，不能接动词原形或动词-ing形式。
例如：
- I can't afford to buy a new car.
- She agreed to help me with my homework.
- His aim is to become a doctor.
- The sun appears to rise in the east.
- They arranged to meet at the coffee shop.
- He asked to borrow my pen.
- She attempted to climb the mountain.
- He begged to be allowed to leave early.
如果你遇到其他动词，不确定后面应该接什么形式，可以查阅相关的语法书籍或者在网上搜索。学习这些规则需要时间和耐心，但是掌握这些规则可以让你的英语写作更加精准和流畅。
记住这八个，其他皆不定式，相信大家可以轻松记忆。
