本帖最后由 hua_chris 于 2013-8-6 14:25 编辑 9 _5 i) `# ?; K+ Y& `* Z! N4 W) }0 H5 f* k+ D5 {
Last night, I took part in a party. 1 @! n" p! X! D" I! ALast 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.