本帖最后由 hua_chris 于 2013-8-6 14:25 编辑 ?$ \/ g n4 G6 `6 G& y) f1 f# R! m! V1 U
Last night, I took part in a party. 9 W: W7 b$ P+ U9 |5 P, D2 @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.