Question

he finished his homework _____. 选择题选什么??

he finished his homework _____.
A,on his own
B.by his own
C,in his own
D.at his own
为什么是选A啊？？ 我觉得选B啊,介词应该怎么用啊.唉

Answer 1

A。on one's own 靠某人自己，固定搭配。用by 的话是By himself。记着一些固定搭配，介词选择就容易些了。

Answer 2

这题就是选A， 独自地有两种说法，on one's own 或是 by oneself ，不要弄混了

Answer 3

固定搭配呀。on one‘s own.靠某人自己。
by 的话一般是by oneself