在英语语法中,and 连接两个主语时,第二个主语可以是动词原形,也可以是动词不定式形式。但是当第二个主语是动词不定式时,通常会在前面加上 to,例如:- My mother likes to read books and watch TV at night.(我的母亲喜欢晚上读书和看电视。)- I need to go to the post office and buy some stamps.(我需要去邮局和买一些邮票。)需要注意的是,有些动词不定式中有自身的情态动词,如 can、could、may、might、will、would、shall、should 和 must 等,这些情态动词不会再次重复使用,例如:- You have to study hard and pass the exam.(你必须努力学习并通过考试。)- She wants to learn Chinese and can speak it very well.(她想学中文并能够说得很好。)