本帖最后由 hua_chris 于 2013-8-6 14:25 编辑 1 j/ n: z/ e/ b {# ~4 B- e 0 B6 v5 ^8 x2 @5 U4 [Last night, I took part in a party. # Q) r6 Z0 {: D( 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.