现在进行时由 am/is/are 加现在分词构成。

　　例句：

　　They’re having a meeting. 他们在开会。

　　I’m studying at an evening school. 我在上夜校。

　　Mike is coming home on Thursday. 迈克星期四回来。

　　They’re having a party next week. 下星期他们将开一个晚会。

　　You’re always interrupting me! 你老打断我的话！(抱怨)

　　My father is always losing his car keys. 我爸老丢车钥匙。(不满)

　　She’s always helping people. 她老是帮助别人。(赞扬)