how
1.how about...? 和what about...? 意思相同,作“…怎样?”解,如How(或What)about the weather? 和How(或What)about doing a show?
2.How beautiful a sight! 和What a beautiful sight! 都可以说,但第一种表达方式不普通,不可说How a beautiful sight! 或What beautiful a sight!
3.How do you do? 是相见时的口头语,双方都说这句,不需要I'm quite well, thank you等答语。
4.how ever和however不同。参见ever 5