各种时态举例：
（请注意have一词在各句中的词性并不尽相同。）
一般现在时：I have two hands. 我有两只手。
现在进行时：I am having some fun here.我在这玩得很开心。
现在完成进行时：I have been doing my assignment since Monday. 我从星期一开始做作业。
现在完成时：I have had my dinner.我吃过晚饭了。
一般过去时：I had a pen-pal. / I used to have a pen-pal.我以前有个笔友。
过去进行时：I was having a chat with David.我（当时）正在和大卫神侃。
过去完成时：I had just graduated. (那时)我刚毕业。
过去完成进行时：I had been doing that for quite a while. 我那样做已经有一段时间了。
一般将来时：I am going to have an exam tomorrow.明天我要考试。
将来进行时：I will be having a wedding.我将举办婚礼。
将来完成时：I will have got it done. 我会把它弄妥的。(用法不常见)
将来完成进行时：I will have been doing that since next year. 我将从明年开始对付这事儿。（用法不常见）