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Unit10TheWorldAroundUs1.Whyisitimportanttomakesurethatanimalsdonotdieout?为什么确保动物不绝种很重要?1)句中的it是形式主语,代替后面作真正主语的不定式短语。例如:Itisnoteasytogetalongwithhim.和他相处不容易。2)makesure意为“务必/确保……”。后面常跟一个宾语从?
Unit10TheWorldAroundUs1.Whyisitimportanttomakesurethatanimalsdonotdieout? Why is it important to ensure that animals are not extinct? 1) It is a formal subject in the sentence, instead of an infinitive phrase that is followed by a real subject. For example: Itisnoteasytogetalongwithhim. It is not easy to get along with him. 2) Makesure means “must/make sure...”. Behind often an object from?