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. |