精选优质文档-倾情为你奉上高中英语知识点大全（66）：happen的用法1、had better (not) do sth. 最好（不要）做某事用来委婉地提出建议或劝告，had通用于各种人称和数的形式。Youd better give up smoking.It dose no good to your health.你最好把烟戒掉，吸烟对健康没好处。she had better not come this evening. 今晚她最好不要来。2、hand down(=pass down) 相传、传给意思是“（从上代）传下来（给后代）”。In poor families, clothes may be handed down from one child to the next.短语：hand back 把归还 ；hand in 面交，提出 ；hand out 分发 ；hand on 传阅，依次传递 ；hand over 移交。3、happen句型归纳(1)happen to do sth.(主语常为“人”)，意
