精选优质文档-倾情为你奉上高考常用句型1. It is+ n /adj.( necessary/ important/essential )that + sb. (should) + do sth.It is important that we (should) keep the public places clean.It is + n / adj for sb. to do sth.It is a must that everybody should know how to use computers.It is convenient for us to be able to use computersIt is +nolittle use, nomuch good, useless+doing sth Its no use crying over spilt milk翻译：1. 对一个高中生来说，在一周内完成这个任务是很有挑战性的。_
