老师好,请教一句句子的语法.
Why,youmaywonder,shouldspidersbeourfriends?Becausetheydestroysomanyinsects,andinsectsincludesomeofthegreatestenemiesofthehumanrace.Insectswouldmakeitimpoossibleforustoliveintheworld;theywoulddevourallourcropsandkillourflocksandherds,ifitwerenotfortheprotectionwegetfrominsect-eatinganimals.
在其中,"Insectswouldmakeit"是过去将来一般时态吗?如果是,它并没有一个主句指出它是处于过去的状态啊.比如说Yesterday,hesaidthathewouldstudyEnglish.在此句中,would有一个主句的谓语said指出它处在过去状态.
或是"would"表达的意思是“将会”,但是句子是一般现在时态,为什么不用“will”?
比如说这句“Parentsinvolvementintheirchildrenseducationisdifferentandthatwouldaffectwhatthestudentslearn.”
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