2017--2018学年译林版必修五unit 1 getting along with others grammar(动词不定式)课件(69张)
2017--2018学年译林版必修五unit 1 getting along with others grammar(动词不定式)课件(69张)第3页

结构 : to do (否定) not/never to do

二. 时态与语态

不定式

to do

to be done

to be doing

to have done

to have been done

to have been doing

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