［析］ 由not only… but also…连接两个主语时，其重点在其后面的那一个主语，所以谓语形式应采用就近原则。

［误］ The teacher as well as his students are coming.

［正］ The teacher as well as his students is coming.

［析］ 由as well as 连接两个主语时，谓语动词与as well as 后面的名词无关，而与前面的名词相一致。

［误］ Tom does not swim nor play football.

［正］ Tom does not swim or play football.

［析］ nor主要用于连接句子的对等连词，如在否定句中连接某一部分时要用or, 但要注意句子的含意，如：This animal does not like a cow or a horse. 这个动物既不像牛也不像马。This animal does not like a cow but a horse. 这个动物不像牛而像马。

［误］ For there is no light in the classroom. The students must have gone home.

［正］ The students must have gone home, for there is no light in the classroom.

［析］ 由for引出的原因状语从句在使用时要注意不能将该从句置于句 首，而应置于主句之后，并在主句与从句之间加一逗号。更要注意的是because, as, since与for 4个表示原因的连词中because是因果关系，是最强的一个，而for是最弱的一个。有些语法书中干脆把for叫做并列连词

［误］ My brother will pass the English exam is no question.