(that)sb(should)doISODPCRD(that)sb(should)doinsist,suggest,order,demand,mand,request/require,,,,,without:表示过去的事实相反虚拟语气:if从句X=would,shouldcould,might现在事实相反:Ifsbdid/were,,:Ifsbwereto/shoulddo,,:Ifsbhadpp,,。。。-(in)doingsth
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