初中英语非谓语动词什么时候用不定式什么时候用动名词过去分词
非谓语动词中什么时候用不定式,什么时候用分词,什么时候用动名词?不是区分todo,tobedoing,tohavedone,tobedone,tohavebeendone...
非谓语动词中什么时候用不定式,什么时候用分词,什么时候用动名词?
不是区分to do,to be doing,to have done ,to be done ,to have been done!
而是选项中同时出现to be doing和doing
或to have done和having done
或to have been done和having been done时改选哪一个 展开
不是区分to do,to be doing,to have done ,to be done ,to have been done!
而是选项中同时出现to be doing和doing
或to have done和having done
或to have been done和having been done时改选哪一个 展开
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