句型例句
用作定语
▲ ～+n.
She's a useful person to know. 她是个应该结交的有用的人。 John is a useful person to be around on such occasions. 在这种场合有约翰在身边是很有帮助的。 Horses are useful animals. 马是有用的动物。 I need a useful dictionary. 我需要一本有用的词典。 He gave us some useful advice. 他给了我们一些有益的忠告。 Salt is a useful substance. 盐是一种有用的物质。 This is a useful book for beginners in English. 这是一本对英语初学者有用的书。 The England cricket team scored quite a useful total. 英格兰板球队得分总数令人满意。用作表语
▲ S+be+～
Money is always useful. 钱总是有用的。 Information about people's language ability is often very useful. 有关人们语言能力的信息经常是很有用的。▲ S+be+～+prep.-phrase
He is useful at cooking. 他很会烧菜。 He is very useful at maths. 他精通数学。 These books might be useful to you. 这些书可能会对你有用。 These story books are useful to children. 这些故事书对儿童有好处。 Your advice was very useful to me. 你的劝告对我很有益处。 We should absorb whatever experience is useful to us. 我们应吸取对我们有益的经验。 Tom's advice has been most useful to us. 汤姆的建议对我们是很有用的。 Such information is useful only to those who know that particular subject. 这种材料只是对了解那个特殊问题的人才有用。 Outdoor sports are useful to your health. 户外运动对你的健康很有好处。 This book will come in useful for criticizing the wrong behaviour. 这本书对批评错误的行为很有用。 The computer is useful in processing data. 计算机在处理数据方面很有用。▲ It is/was+～+(for sb+) to-v
It is useful to read the text early in the morning. 清晨读课文很有用。 It is very useful for a person to know how to swim. 对一个人来说会游泳是很有用的。 Probably it will be useful for them to acquire a practical knowledge of English. 有英语的实际知识可能对他们有用。▲ It is/was+～+v-ing
It's useful knowing several foreign languages when you are traveling abroad. 在国外旅行时，会几门外语是非常有用的。用作宾语补足语
▲ S+V+O+～
I find this pen very useful. 我觉得这支笔很有用。