精选优质文档-倾情为你奉上时态一：一般现在时动词第三人称单数一、定义：1、经常性、习惯性的动作；2、事物或人物的特征或状态；3、客观现实、真理或规律。Example：1. 表示经常性、习惯性、永久性、频率性的动作，通常与副词often, usually, always, every day (year/ month ), once (twice, three times) a day（week/moth/year）, sometimes，in the morning/afternoon/evening， on Sundays等时间状语连用。They usually go to school by bike.I take the medicine three times a day.She helps her mother once a week. 2.表示事物或人物的特征、状态Marys father is a policeman.There are 50 students in my class.
