now.

［析］ 并列句中常常在后面的句子中作一些省略，以免重复，但不是所有词都可作任意的省略的。当你连接的是两个系动词时，后面的那个系动词不可省略，也就是讲连接的部分不可省略。 ［误］ My father likes swimming and to collect stamps.

［正］ My father likes swimming and collecting stamps.

［析］ 由并列连词连接的两个部分要保持相等的语法结构。如是动名词则都用动名词，如用不定式则都应用不定式，这是初学者要注意的一点。

［误］ My father is reading a newspaper, I am doing my homework. ［正］ My father is reading a newspaper while I am doing my homework.

［析］ 两个并列句中间不可用逗号连接，要用并列连词来连接。 ［误］ My father asked me that if I wanted to learn how to drive. ［正］ My father asked me if I wanted to learn how to drive. ［析］ 宾语从句的连接词只能有一个不能重复使用。

［误］ We will go both to Beijing and Shanghai.

［正］ We will go to both Beijing and Shanghai.

［析］ 用both…and…作连接词时，其相连接的部分结构也要相同。

［误］ Not only Mary but also her brothers is going to dance. ［正］ Not only Mary but also her brothers are going to dance.