able的语法结构
able作为形容词时,通常用于描述某人或某物具备完成特定动作的能力。
基本用法
1. 主语+be动词+able+to do
She is able to speak French.
2. 主语+be动词+able+动名词
He is able running marathons.
否定形式
able的否定形式为unable,表示不具备能力。
- They are unable to solve this problem.
- She was unable to attend the meeting.
比较级与最高级
比较级 | 最高级 |
more able | most able |
常见搭配
- able to do sth - 具备做某事的能力
- able and willing - 愿意且能够
- able to understand - 能理解
固定搭配例句
1. Only a few people are able to master this skill.
2. She is not able to accept this offer due to her health.
注意事项
able不可用于进行时态,如He is ableing to do this为错误表达。
在正式文体中,able多用于书面表达,口语中常用can替代。
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