able 的用法及例句
一、基本含义
able 是一个形容词，表示“有能力的；能干的；能够……的”。它通常用于描述某人或某物具备某种能力或技能。
二、常见搭配
- be able to do sth.：表示“能够做某事”，强调具体的能力或可能性。
- able-bodied：表示“体格健壮的；身强力壮的”。
- as/so able as sb./sth.：与某人/某物一样有能力。
- all (the) more able：更加能干（尤指在某方面）。
三、详细用法
描述个人能力
- He is able to swim across the river.（他能游过这条河。）
- She is very able in her job.（她在工作中很能干。）
表示可能性
- I will be able to help you with your homework tomorrow.（我明天能帮你做作业。）
- We were not able to find the restaurant.（我们没能找到那家餐馆。）
与其他词组合使用
- An able leader should inspire confidence in his team.（一位有能力的领导者应该让团队充满信心。）
- The company needs able-bodied workers to handle heavy loads.（公司需要体格健壮的工人来搬运重物。）
比较结构
- John is as able a musician as his sister.（约翰和他姐姐一样是个有才能的音乐家。）
- She's all the more able now that she has had some experience.（她现在有了些经验，就更有能力了。）
四、注意事项
- 时态变化：在表达将来的能力时，常用“will be able to”或“be going to be able to”；在表达过去某个时间点的能力时，用“was/were able to”。
- 否定形式：直接在able前加not，构成“not able to do sth.”或“unable to do sth.”。
- 区别于can：“can”表示一般性的能力，“be able to”则更侧重于具体的、一次性的能力或在特定情境下的能力。
五、例句拓展
- With practice, you'll be able to play the piano well.（通过练习，你会弹好钢琴的。）
- Despite feeling nervous, she was able to give a great speech.（尽管感到紧张，她还是成功地发表了一篇精彩的演讲。）
- Not everyone is able to understand complex mathematical concepts.（不是每个人都能理解复杂的数学概念。）
- The firemen were able to rescue all the trapped residents.（消防员成功救出了所有被困的居民。）
