1.并列主语：由and和both ...and连接的并列主语谓语动词用复数。
Jim and Mary are both interested in it.吉姆和玛丽都对此感兴趣。
Both brother and sister are working in the city.兄妹俩都是在城市工作。
【提示】 当and连接的两个的词语指同一个人或事物时，谓语用单数。
A cart and horse was seen in the distance.远处看见一辆马车。
The iron and steel industry is very important to our life.
钢铁工业对我们的生活很重要。
2.并列谓语：谓语并列中在最后一个谓语动词前加and。
Yesterday I went to buy some books and had dinner at a good restaurant.
昨天我去买了一些书，又在一个很好的饭店吃了晚饭。
The soldier looked at him，exchanged glances with his comrade and took out the gun.
士兵看着他，和同伴互相使了个眼色，掏出了枪。