两次用英文怎么写

twice 英[twaɪs] 美[twaɪs] adv. 两次; 两倍; 两遍; [例句]He visited me twice that fall and called me on the telephone often那年秋天他来看过我两次，而且经常给我打电话。

once,twice,three times,four times,five times,six times,...

twicetwo times

oncetwice以后一般就是数字+ timesthree times four times