后面跟动词原形的动词或词组有:can/may/mustdoes/do/didwill/wouldshall/shouldbegoingtodosth“打算”needn’tdo“不必做;不需要做”hadbetterdo“最好做……”havetodo“不得不……”letsbdo“让我们……”makesbdo“让我们……”havesbdo“让我们……”Whynotdo “为什么不……;……吧”如:Whynotaskher?Whydon’tyoudo“为什么不……;……吧”Willyouplease……? “请你……好吗?”Wouldyouplease……?prefertodoratherthando“喜欢做……而不喜欢……”wouldratherdosth“宁愿……”ratherthandosth“宁愿……”wouldratherdothando“宁愿……而不…… usedtodosth“过去常常”donothingbutdosth“只能”don’tdoanythingbutdo“只能” can’t(help/choose)butdo 不能不;只得;必须Whenyourclassmatesneedyourhelp,youcan’,youcan’…too/over/enough/more “越……越……”’tbeovercareful. Onecan’nbetoocareful.
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