However是一個常用的副詞，表示“然而”，用于連接兩個相對矛盾的句子或觀點，起到轉(zhuǎn)折或?qū)Ρ鹊淖饔谩Ｔ诰渥又?，however通常出現(xiàn)在兩個句子之間，用逗號隔開。例如：

- I was planning to go to the beach today, however, it is raining heavily.

- John is a hardworking student, however, he didn't do well in his final exams.

除了單獨使用之外，however還可以與其他單詞組成短語，用于表達(dá)更加復(fù)雜的意思。以下是一些常見的however短語：

1. However much/ Many/ Few/ Little/ Often/ Seldom/ etc. - 表示不管多少、多少、少量、少許、經(jīng)常、很少等等。例如：

- However much I try, I can't seem to understand this math problem.

- However little time we have left, we need to finish this project on time.

2. However much/ Many/ Few/ Little/ etc. + Noun - 表示數(shù)量的限制。例如：

- However many books she reads, she never seems to get tired of reading.

- However little money we have, we need to find a way to make it work.

3. However + Adjective - 表示程度的限制。例如：

- However difficult the task may seem, we need to try our best to complete it.

- However boring the movie was, I still stayed until the end.

4. However + Adverb - 表示程度的限制。例如：

- However fast he runs, he can never catch up with me.

- However carefully you drive, accidents can still happen.

總之，however是一個常用的轉(zhuǎn)折副詞，可以用于連接兩個相對矛盾的句子或觀點。同時，它還可以與其他單詞組成短語，表達(dá)更加復(fù)雜的意思。