1、Have you been to Rome?你已经去了罗马吗？
2、I have never seen him before.以前我从来没有见过他。
3、Gil bought a new computer.吉尔买了一台新电脑。
4、This is the best film I have ever seen.这是我看过的最好的电影。
5、He is cleaning his shoes.他在清理他的鞋子。
6、This is the first time I've heard him sing.这是我第一次听他唱歌。
7、I've been learning the new words.我一直