how: [OE] How belongs to the large family of question-words which in Indo-European began with qw- (as in English quantity, query, etc). The phonetic descendant of this in prehistoric Germanic was khw-, which in modern English is represented by wh-. How itself comes from a West Germanic adverb *khwō formed from the base that also produced English what and who; like who it has lost its /w/ sound, but since who did not lose it until considerably later the spelling wh remains as a reminder of it.
The how! with which North American Indians supposedly greet each other is not the same word, incidentally. It is an imitation of a Sioux word, such as Dakota háo or Omaha hau. => what, who
how (adv.)
Old English hu, from Proto-Germanic *hwo- (cognates: Old Saxon hwo, Old Frisian, Middle Dutch hu. Dutch hoe, German wie, Gothic hvaiwa "how"), from common PIE interrogative pronominal stem *kwo- (see who). How come? for "why?" is recorded from 1848. And how! emphatic, first recorded 1865. The formulation was common in book and article titles by then (such as The National Debt, and How to Pay It), but Pennsylvania writer Bayard Taylor, in whom it is first recorded, seems to regard it as a German or German-American expression.
how (interj.)
Native American greeting, Siouxan (Dakota hao, Omaha hau); first recorded 1817 in English, but noted early 17c. by French missionary Jean de Brebeuf among Hurons as an expression of approval (1636).
实用例句
1. No matter where you go in life or how old you get, there's always something new to learn about. After all, life is full of surprises.
不管你生活在哪里，你有多少岁，总有新东西要学习，毕竟，生活总是充满惊喜。
来自金山词霸 每日一句
2. I know how to darn, and how to sew a button on.
我会打补丁，缝纽扣。
来自柯林斯例句
3. You must have noticed how tired he sometimes looks.
你一定注意到他有时候显得特别疲惫。
来自柯林斯例句
4. I have a fair idea of how difficult things can be.
我大致了解情况会有多困难。
来自柯林斯例句
5. How are you Lennox? Good to see you up and about.