enough是什么意思
Enough是一个多功能词汇,作为形容词、副词和代词使用,其用法复杂但重要。以下是它的主要用法说明:
1. 作为形容词,它可以修饰可数或不可数名词,既可以放在名词前,如 "enough food",也可以放在名词后,如 "I don't have wine enough for five persons"。当作为表语时,仅限于代词、数词加名词结构。
2. 作为代词,enough可作主语或宾语,表达“足够”之意,如 "Enough has been said" 或者 "Enough have been supplied"。
3. 用作副词时,修饰形容词或动词,例如 "This room is large enough" 或者 "I can never thank you enough"。
4. 当与形容词一起修饰名词,enough的位置有变化,可放在形容词后或前,形成 "adj.+ enough + noun" 或者 "enough + adj. + noun"。
5. 与介词of结合为 "enough of",用于表达“足够…”,如 "Is there enough of the blue material?"。
6. 与 "for" 结合,enough后面可以跟sb或sb to do sth,如 "He was lucky enough to succeed"。
7. 注意enough不能与no连用构成否定,应使用not等否定词,如 "We don't have enough glasses"。
8. 在礼貌请求中,常用 "Would you be kind/good enough to do sth?" 的句型,如 "Would you be kind enough to let us know the date?"。
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