本帖最后由 hua_chris 于 2013-8-6 14:25 编辑 : q& X) V- g1 g$ W! a! N4 {% s 2 f% p8 g* i+ w5 k5 b- }Last night, I took part in a party. ; Y# g0 o, M4 ?# R( |& K) oLast 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.