working long hours, woking for long hourssince going to work at t_英语解答

working long hours, woking for long hours
since going to work at the agency, he has been working long hours.
后面为什么不是woking for long hours呢?
经常说到的都有work for a long time...
这个里面为什么不加for呢.
谢谢.

人气：165 ℃　时间：2020-04-07 09:00:47

解答

for后面加段时间
可以这样说He has worked for long hours.
而问题这句是个现在完成进行时,所以work后面直接加时间而不用介词