精选优质文档-倾情为你奉上上海牛津小学英语语法知识总结一般现在时1、定义：表示经常发生或习惯性的动作、状态。句中通常有usually，often，every day，sometimes，always，at weekends，on Sundays等表示经常性时间的短语。 2、构成：1）当谓语是be动词时，一般现在时的构成：主语be动词其他如：I am a student. He is Jims father. They are from Japan.2）当谓语是行为动词时，一般现在时的构成：主语（非第三人称单数）动词原形其他如：I often watch TV at the weekends. Mr Green and Mrs Green like collecting stamps.主语（第三人称单数）动词的第三人称单数形式其他如：Jim usually visits his grandparents on Sundays. She sometimes g
