have是在英语学习中最常见的助动词之一，那么关于have的用法有哪些呢?
1. 助动词have+过去分词构成完成时态。
I have never seen such a strange man.
我从未见过这么奇怪的人。
Yes, he has been here twice but hasn't had his hair cut yet.
是啊，他来了两次还没把头发理了。
He's gone to your house.
他去你家了。
2. HAVE+宾语+过去分词表示让某事由某人做。
Can I have my hair cut now?
你现在可以给我理发吗?
Oh, you haven't had your hair cut yet.
噢，你还没理发呀。
3. HAVE+宾语+原形不定词表示请或让某人做某事。
Or I can have my assistant help me do it.
或者我可以让我的助手帮我来做。
4. have作为本动词表示"有、拥有"的意思。
No, I don't have much time.
不行，我没那么多时间。
Oh, you still have many customers today.
噢，你今天还有很多顾客呀。