both .and.意为“两者；两个；双方”（谓语动词用复数）
Both John and Ann are good at French.
either.or...或者.或者.,不是.就是.
He is either a doctor or a teacher.
注意：连接两个并列主语是,谓语动词与其靠近的主语一致.
Either you or he hs to go there.
neither.nor.既不.也不.谓语动词与其靠近的主语一致
Neither he nor I am good at English.
none of 没有人（物）,指三个或三个以上都不是,谓语动词可以是单数形式,也可以是复数形式.None of them like/ likes playing basketball. both .and.意为“两者；两个；双方”（谓语动词用复数）
Both John and Ann are good at French.
either.or...或者.或者.,不是.就是.
He is either a doctor or a teacher.
注意：连接两个并列主语是,谓语动词与其靠近的主语一致.
Either you or he hs to go there.
neither.nor.既不.也不.谓语动词与其靠近的主语一致
Neither he nor I am good at English.
none of 没有人（物）,指三个或三个以上都不是,谓语动词可以是单数形式,也可以是复数形式.None of them like/ likes playing basketball.