before后是加动名词吗

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before后是加动名词吗before后是加动名词吗before后是加动名词吗before后面有3种情况1、接句子,如:HehadgothomebeforeIcalleduphim.2、接动名词,前提

before后是加动名词吗
before后是加动名词吗

before后是加动名词吗
before后面有3种情况
1、接句子,如:
He had got home before I called up him.
2、接动名词,前提是主句和从句的主语必须一致,before后面的主语可省略,如:He has worked for a company before graduating from university.
3、接名词,上面第2种情况还可以这样写:
He has worked for a company before graduation.