1、智课网IELTS备考资料雅思阅读：非谓语动词的主要类型动词不定式的时态和语态1)构成：(以动词“do”为例)主动态：一般式“to do“;完成式“to have done“;进行式“to be doing“;完成进行式“to have been doing”被动态：一般式“to be done“;完成式“ to have been done“否定式：not+不定式2)不定式的时态：不定式的一般式表示的动作与主句谓语动词表示的动作同时发生或之后发生。He seems to know her address.(：=It seems that he knows her address.)I hope
2、 to see you again.(=I hope that I11 see you again.)不定式的进行体表示的动作正在进行，与主句谓语动词表示的动作同时发生。其用法主要有以下几种情况：a 常用在 “appear，happen，pretend ，seem，hope，promise“之后。She pretended to be listening attentively.Tom appeared to be living in this area.I hope to be earning my living in a years time.(I hope 1 will/would be
3、 earning my living)I promised to be waiting at the door when he came out.b 常用在“believe，consider，suppose，think，know ，report，say，understand“ 等动词的被动式之后。He is thought/known/believed/said/supposed to be living in this area = People think/know/ believe/ say/suppose that she is living abroad.据认为 (据知，据信，据说，据猜测)她住在国外。注“be supposed to”通常含有 “应该”意思，表示一定的责任和义务。You are supposed to know how to use a computer=You should know how to use a computer.Students are not supposed to cook in their dormitory=Students shouldnt cook in their dormitory.推荐新闻:雅思阅读需要对原文“地毯式 ”搜索雅思IELTS阅读判断题答案的写法技巧雅思IELTS阅读背景之香蕉的进化相关字搜索： 雅思
