本帖最后由 hua_chris 于 2013-8-6 14:25 编辑 / o" C8 a. b0 P8 M) y 1 B/ z, i' v' ?: e5 k- `1 X& v1 `0 |Last night, I took part in a party. ! |* j& p; m3 z- P# @. [( y1 {Last night, I was taking part in a party.
to me, all 4 are ok and acceptable. depend on where and how you are going to use them. picking one over another doesn't make the sentence any more or less sophisticated.