因为work at 是固定词组 从事 某项 工作
而work on 也是固定词组 意思是 对.发生作用
on如果是副词 是 继续工作
本句意思 我必须用功学英语 所以 只能用 work hard at
i must work hard on english.短文改错,为什么要把ON改成AT?
i must work hard on english.短文改错,为什么要把ON改成AT?
i must work hard on english.
短文改错,为什么要把ON改成AT?
The young man came riding full speed down the road on his bicycle._______it was!
A how dangerous the scene
B what dangerous a scene
C how dangerous scene
D what a dangerous scene
i must work hard on english.
短文改错,为什么要把ON改成AT?
The young man came riding full speed down the road on his bicycle._______it was!
A how dangerous the scene
B what dangerous a scene
C how dangerous scene
D what a dangerous scene
英语人气：372 ℃时间：2019-08-19 14:35:55
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