Overview:infinitive,verb-ing&verb-ed(I)非谓语动词过去分词:v-ed不定式:(to)dov-ing形式动名词现在分词Reviewthegeneralfunctionofnon-finiteverbs(Tick√or×)非谓语动词成分主语谓语宾语表语定语补语状语(to)do(不定式)v-ing(动名词)v-ing(现在分词)v-ed(过去分词)√××××√√√√√√√√√√√√√√√√√(一)
不定式和动名词作主语I
不定式作主语时,可以用it作形式主语
Itisimportant______Tomtogetthatjob
Itiskind______youtohelpmewithmyEnglish
forof总结:Itis+adj
+for/ofsbtodosth的结构中,若此形容词是说明的是不定式的性质时,则用_____;若说明的是人(sb
)的特性,则用_____
Itisnice___youtohelpmewithmyEnglish
Itisnecessary________youtoimproveyourspokenEnglish
offorforofII
动名词作主语还有以下两个习惯表达法1
Itisnouse(good)+动名词做某事没用(不好)E
g:*It’snousecryingoverspiltmilk
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*在公共场合随地吐痰(spit)不好
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*未来的事无法知道
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Thereisno+doing(动名词)(=Itisimpossibletodosth
)覆水难收It’snogoodspittinginpublicThe