動詞不定式屬於我們很早就接觸了句式，在雅思閱讀過程中我們也會經常接觸這一雅思閱讀知識點，爲此小編特將關於動詞不定式的雅思閱讀知識點分享給大家，希望對大家有所幫助，文中觀點僅供參考。
1)動詞不定式的構成：(以動詞“do”爲例)
主動態：一般式"to do";完成式"to have done";進行式"to be doing";完成進行式“to have been doing”
被動態：一般式"to be done";完成式“ to have been done"
否定式：not+不定式
2)不定式的時態：
①不定式的一般式表示的動作與主句謂語動詞表示的動作同時發生或之後發生。
He seems to know her address.(：=It seems that he knows her address.)
I hope to see you again.(=I hope that I’11 see you again.)
②不定式的進行體表示的動作正在進行，與主句謂語動詞表示的`動作同時發生。其用法主要有以下幾種情況：
a 常用在"appear，happen，pretend，seem，hope，promise"之後。
She pretended to be listening attentively.
Tom appeared to be living in this area.
b 常用在"believe，consider，suppose，think，know，report，say，understand"等動詞的被動式之後。
He is thought/known/believed/said/supposed to be living in this area = People think/know/ believe/ say/suppose that she is living abroad.[據認爲(據知，據信，據說，據猜測)她住在國外。]
[注]“be supposed to”通常含有“應該”意思，表示一定的責任和義務，在雅思閱讀中出現的很多。
You are supposed to know how to use a computer=You should know how to use a computer.
