动词的现在式即动词原形(如:meet, do, like等),用于祈使句、不定式的时态中的一般现在时,但碰到单数第三人称时,需要在动词原形词尾加-s(其构成法与名词复数的构成法及读单相同,如meets, does, likes, studies。I live in the center of the town.我住在市中心。
He often goes to school by bus.他经常乘公共汽车上学。 Sometimes they play basketball in the weekends. 有时他们在周末打篮球。
不规则动词的变化则应特别记忆(或查不规则动词表),如:met did。 I went home at half past five yesterday. I was gald to receive you letter of 16 th May.
3、过去分词:
与hava或had构成完成时态,与be构成被动时态。构成情况与过去式相同。 developed countries发达国家boiled 开水rozen冷冻食品spoken English英语口语 Tom has already passed this exam.She said she had borrowed a new book
现在分词的作用是,可与be构成进行时,或用作形容词或动名词。 developing countries 发展中国家boiling water 沸腾的水freezing wind 刺骨的寒风 I heard the senior students singing in the hall.My father was cooking when I got home yesterday.