一、both用作代词,意为“两者”、“双方”。1.在句子中作主语或宾语,可单独使用或用于“both of.”结构中,但当of后面是名词时,名词前面必须有the、ones等限定词。另外,当其作主语时,谓语动词必须用复数。如:Both are good. 两个都挺好。Why not use both? 为什么不两者都用?Both of them have gone out. 他们俩都外出了。Both of the men are asleep. 那两个男人都睡着了。Of course, I wish both of your children well. 当然,我祝福你的两个孩子都健康。2.用作主语的同位语。其位置主要有三种情况:放在实义(行为)动词之前;放在情态动词、助动词之后;放在连系动词be之后。如:We are both students. 我们俩都是学生。Dont thank me. You must both thank him! 别谢我。你们俩必须感谢他! We have both passed the mid-exami