在英語中,how是個疑問副詞,what是個疑問代詞.在它們引起的句式中,有時可以互相換用,來表達相同或相似的意思.
一、問天氣：How…?=What…like?如：
How was the weather yesterday?昨天的天氣怎么樣?
What was the weather like yesterday?
二、征求意見或建議：How about…?=What about…?如：
How about going skating?
What about going skating?去滑冰怎么樣?
三、問年齡：How old…?=What…the age…?你多大歲數(shù)了?
四、問看法：How…like…?=What…think of/about…?如：
How do you like this film?你認為這部影片怎么樣?
What do you think of this film?
五、問價錢：How much…?=What…the price 價錢）of…?如：
How much is the book?
What’s the price of the book?這書多少錢?
六、“how／what+可數(shù)名詞單數(shù)”構(gòu)成感嘆句：How + adj.+ a/ an+ n…!=What + a/an +adj.
+n.…!如：
How clever a girl she is!她是個多么聰明的女孩子啊!
What a clever girl she is!
七、“how/what+可數(shù)名詞復(fù)數(shù)或不可數(shù)名詞”構(gòu)成感嘆句,句子結(jié)構(gòu)有所不同,漢語意思也稍有差異.如：
How high the mountains are!這些山多高啊!
What high mountains they are!多高的山啊!
當然,有些由how引起的感嘆句是不能用what進行轉(zhuǎn)換的,如下列句子中的how不宜換用what.
How fast he is running!他跑得多快啊!
How time flies!光陰似箭!