| 单词 | useful |
| 释义 | useful ['ju:s.fəl] adjective ESSENTIAL ■effective; helping you to do or achieve something 有用的，有效的；有助益的 •A good knife is probably one of the most useful things you can have in a kitchen.一把好刀应该是厨房里最有用的物件之一。 •Do the exercises serve any useful purpose?这些练习有甚么用处吗？ ['ju:s.fəl] adjective come in useful UK ■to be useful and help someone to do or achieve something 派上用场，有帮助 •You should keep that paint - it might come in useful one day.你应该留着那些油漆——说不定哪天会派上用场。 ['ju:s.fəl] adjective make yourself useful ■a way of telling someone to start being helpful 别闲着 •Now you're here you might as well make yourself useful - there's a lot of clearing up to do.既然你来了，那就别闲着——有很多清理工作要做。 ['ju:s.fəl] adjective Common Learner Errors usefulWarning: Common word-building error!Adjectives which end in the suffix -ful have only one 'l'.Don't write 'usefull', write useful. |
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