精选优质文档-倾情为你奉上牛津英语5a英语语法(三)一般现在时一. 一般现在时行为动词词型变化形式一般现在时动词只有第三人称有词形变化,其他人称动词均用原形单数第三人称动词变化:多数在动词后加splayplayslikelikes ,以s,x,sh,ch,o结尾的动词加esgogoeswash-washes,以辅音字母加y结尾,把y改i再加esflyfliesstudy-studies二. 一般现在时动词be和 have的变化形式1.动词Be 叫连系动词, 连系动词be的用法:除了第一人称单数用am,和第三人称单数用is以外,其它人称用are。I am busy. You are busy. He (She) is busy. We (You, They) are busy.2.动词have的用法:除了第三人称单数用has以外,其它人称一律用have。如: I have a pen. You have a pen. She (He) has a pen.We (You, They) h