Question

The boy did his homework with the help of his father in the past. But now he can do it alone.

1. A.
   for himself
2. B.
   on himself
3. C.
   by himself
4. D.
   with himself

Answer 1

C
for himself為自己； on himself靠自己；by himself通過(guò)自己，靠自己； with himself和自己。句意：在過(guò)去，這個(gè)男孩在他的父親的幫助下做作業(yè)，但是現(xiàn)在他能夠獨(dú)自完成了。on himself前與搭配動(dòng)詞depend結(jié)合語(yǔ)境可知選Ｃ。
考點(diǎn)：短語(yǔ)辨析