本帖最后由 hua_chris 于 2013-8-6 14:25 编辑 & S+ [3 p- D! g* E . Q$ S- S4 b) Q7 K9 v+ }1 O* DLast night, I took part in a party. 7 q& z, D# u% kLast 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.