1.spend 的主語只能是人,不能使物.
句子結(jié)構(gòu)是：人+ spend + 錢/ 時間 + on + 物.
He spent $ 300 on this bike.
He spent 3 hours on his homework.
或者,人+ spend + 錢/ 時間 + in + doing + 物.
He spent $ 300 in buying the bike.
He spent 3 hours in doing his homework.
2.costde 主語只能是物,不能使人.意思是消費錢財.
The bike cost him $300.
3.afford意思是‘花得起花不起金錢和時間’.
I can't afford the bike.
I can't afford to buy a bike.
4.pay 支付的意思.(自己分析下面句子的用法區(qū)別)
He paid $ 300.
He paid $ 300 for the bike.
He paid $300 to the seller for the bike.
5.take 的主語只能事物,不能使人.通常用it作主語.
It will take me 3 hours to do my homework.
It took me 30 minutes to walk from here to my school.
其他的問題下次吧.