动词不定式 的构成:(not) to+do( 动词原形 )• A ‘to’-infinitive can be used as…主语( Subject )表语( Predicative )宾语( Object )宾补( Object complement )定语( Attributive )状语( Adverbial )ⅠⅠ 不定式用作主语不定式用作主语To grow trees is very important
It is very important to grow trees
不定式作主语时 , 往往放在谓语之后 , 用 it 作形式主语
Say in another way, using ‘it’
To learn from your friends is important
To leave without saying goodbye is impolite
To chat with Miss White is a pleasant thing
To walk to school takes me ten minutes
It is important to learn from your friends
It is impolite to leave without saying goodbye
It is a pleasant thing to chat with Miss White
It takes me ten minutes to walk to school
It is + It is + adj
+ + forfor sb
to do…≠ sb
is\are +sb
is\are +adj
+to do… +to do… It is + It is + adj
+ + ofo