要想弄清楚及物动词和不及物动词的区别,是不是加介词问题,首先要明白他们的概念。动词按后可否直接跟宾语,可把动词分成及物动词(表示为vt)和不及物动词(表示为vi)。及物动词和不及物动词的区别在于所带的宾语不同。
1)后面必须跟宾语意义才完整的实义动词,叫做及物动词,本身意义完整后面不须跟宾语的实义动词,叫做不及物动词。如:
(1)When did they leave Beijing?(leave及物动词,后有宾语Beijiing )
(2)Tey left last week.( left不及物动词,后没有宾语 )
2)不及物动词后不能直接跟有动作的对象(即宾语)。若要跟宾语,必须先在其后添加上某个介词,如to,of ,at后方可跟上宾语。具体每个动词后究竟加什么介词就得联系动词短语了.
所以及物动词和不及物动词不是加不加介词的问题。
小练习:
指出下列句中动词是及物动词还是不及物动词,及物填vt.,不及物填vi.
1.Most birds can fly.( )
2.The children are flying kites in the park.( )
3.It happened yesterday.( )
4.My watch stopped.( )
5.The baby stopped crying when he saw his mother.( )
6.She spoke at the meeting this morning.( )
7.Shall I begin at once?( )
8.She began working as a teacher after she left school.( )( )