精选优质文档-倾情为你奉上 Useful expressionUnit 1 1.be tolerant of _ 2. ask for _3.have trouble in doing sth _4.pretend to do _ 5.explain sth to sb _6.native language _ 7.with confidence _ _8.feel left out_ 9.now that _10.by means of_ 11.be engaged in _12.for instance _ 13.agree with _14.have difficulty in doing _
