have a look at 与have a look 有何区别

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have a look at 与have a look 有何区别
have a look at 与have a look 有何区别

have a look at 与have a look 有何区别
Look是一个不及物动词,如果后面跟宾语的时候,要加介词at,后面没有宾语的时候就不用介词.比如:I have a beautiful picture.Please have a look(at it).
have a look at后面要加宾语
have a look一般放在句尾,后面什么也不加,后面加上at这个介词后,一定要再跟一个介词宾语.

have a look at sth 而have a look 只是一个短语

前者后面可以接sth.后者不可以