1. both用法
1）adj. 兩者
一般單獨修飾名詞（複數）做前置定語（但名詞前不能有其他限定詞修飾），不做表語/補足語。
如：There are many flowers on both sides of the street.
2）pron. 兩者
可以單獨使用（相當於名詞），也可以構成“both of + 其他限定詞 + 名詞（複數）”或“both of + 代詞”結構。
Both are my good friends.
Both of the boys over there are my good friends.
Both of them are my good friends.
3）adv. 兩者都
一般放在句中，即be動詞之後/前均可，助動詞/情態動詞/行為動詞之前。
They are both my classmates.
They both can play soccer well.
They both have a good son.
4）conj. 不僅...而且...；...和...都...
一般構成both...and...結構，用於連線句中任意兩個並列部分。
如果並列兩個主語，謂語動詞一般採用複數形式。
如：Both you and I are students.
I can speak both English and Chinese.
They can both sing and dance.
The boy is so lazy that he sleeps both in the daytime and at night.
and
連線詞 conj.
1.和,及,與,同;又
They sang and danced all night.
他們通宵唱歌跳舞。
My mother and father have never agreed on this matter.
我父母在這件事情上從未意見一致過。
2.然後
She went to the United States in 1960 and has lived there ever since.
她於一九六○年去了美國,此後就一直住在那裡。
3.而且
You must stop, and at once, this sort of behavior.
你必須停止此類行為,而且必須立即停止。
4.就;所以,因此
Go straight on and you"ll see a church.
一直走下去你便可以看到一座教堂。
5.而,但是
Vegetable oil is digestible
1. both用法
1）adj. 兩者
一般單獨修飾名詞（複數）做前置定語（但名詞前不能有其他限定詞修飾），不做表語/補足語。
如：There are many flowers on both sides of the street.
2）pron. 兩者
可以單獨使用（相當於名詞），也可以構成“both of + 其他限定詞 + 名詞（複數）”或“both of + 代詞”結構。
Both are my good friends.
Both of the boys over there are my good friends.
Both of them are my good friends.
3）adv. 兩者都
一般放在句中，即be動詞之後/前均可，助動詞/情態動詞/行為動詞之前。
They are both my classmates.
They both can play soccer well.
They both have a good son.
4）conj. 不僅...而且...；...和...都...
一般構成both...and...結構，用於連線句中任意兩個並列部分。
如果並列兩個主語，謂語動詞一般採用複數形式。
如：Both you and I are students.
I can speak both English and Chinese.
They can both sing and dance.
The boy is so lazy that he sleeps both in the daytime and at night.
and
連線詞 conj.
1.和,及,與,同;又
They sang and danced all night.
他們通宵唱歌跳舞。
My mother and father have never agreed on this matter.
我父母在這件事情上從未意見一致過。
2.然後
She went to the United States in 1960 and has lived there ever since.
她於一九六○年去了美國,此後就一直住在那裡。
3.而且
You must stop, and at once, this sort of behavior.
你必須停止此類行為,而且必須立即停止。
4.就;所以,因此
Go straight on and you"ll see a church.
一直走下去你便可以看到一座教堂。
5.而,但是
Vegetable oil is digestible