复习动词的时态：一般现在时、现在进行时、现在完成时、一般过去时。 一般现在时（The Present Indefinite Tense）的测试 5 要点：1、表示不受时间限制的客观存在、科学真理、格言等。Water boils at 100 .Twice two is four .The earth goes around the sun .Pride goes before a fall . 骄者必败。One today is worth two tomorrows . 一个今天胜过两个明天。Practice makes perfect . 熟能生巧。Japan lies to the east of China .Shanghai stands on the Huangpu River .England and France are separated by the English Channel .2、一般现在时表示经常地或者习惯的动作，常与频度状语 usually , oft
