高中英语 知识点大全11 ask、at、as用法
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【ask、at、as用法】是高中英语学习中的重要知识点,掌握这三个词的不同用法对提高英语表达能力至关重要。 1. **ask** - `ask for` 表示请求或要求,例如:`She asked for some advice on how to learn English well.`(她询问了关于如何学好英语的一些建议。) - `ask sb. for sth.` 是向某人请求或要求某物的结构,例如:`He asked me for help when he was in trouble.`(他遇到困难时向我求助。) 2. **at** - `at` 可用于表示速度、价格等,如: - `at a high/low price` 表示以高价或低价,例如:`The car was sold at a very high price.`(那辆车卖了个高价。) - `at 40 miles an hour` 表示以每小时40英里的速度,例如:`The car was moving at 40 miles an hour.`(那辆车正以每小时40英里的速度行驶。) - 此外,`at` 还可以表示状态,如: - `at work` 表示在工作,例如:`He is always busy at work.`(他总是忙于工作。) - `at table` 表示在吃饭,例如:`They were at table when the doorbell rang.`(门铃响时,他们正在吃饭。) 3. **as** - `as…as` 结构用来比较两个事物的相似程度,例如: - `as many as` 表示数量相等,例如:`There are as many girls as boys in the class.`(班上的女孩和男孩一样多。) - `as much as` 表示量的相等,适用于不可数名词,例如:`She drank as much water as she could.`(她尽可能多地喝水。) - `as…as possible/one can` 用于强调尽可能地做某事,例如:`Try to be as quiet as possible.`(尽量保持安静。) 【应用练习】 - 完成句子: 1. `The company decided to sell the TV sets at a low price.`(公司决定以低价出售这批电视机。) 2. `The train was running at a speed of 150 miles an hour.`(火车以每小时150英里的速度行驶。) 3. `Don't make any noise while others are at work.`(别人在工作时不要吵闹。) 4. `The children were at play while their parents were at dinner.`(孩子们在玩耍,而他们的父母在吃饭。) 5. `The new bridge is as long as the old one.`(新桥和旧桥一样长。) 6. `This mountain is as high as another one in the distance.`(这座山和远处的另一座山一样高。) 7. `I'll come back as soon as possible.`(我会尽快回来。) 8. `Get up as early as possible tomorrow morning.`(明天早上尽量早起。) 以上内容涵盖了高中英语中关于`ask`、`at`、`as`的基本用法和相关练习,理解并熟练运用这些知识点对于提升英语水平具有很大的帮助。
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