本帖最后由 hua_chris 于 2013-8-6 14:25 编辑 & h+ \" L& [. u: \ # u& m& h) Q9 J+ E$ [1 e, dLast night, I took part in a party." N, q. y# L- g) T3 k( R" u
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.