第十五章 句子(二)简单句:结构一:主语+系动词(包括半系动词)+表语(除了原形动词以外)例 He is a good student. 他是一个学生。(名词) This backpack isnt mine. 这包不是我的。(代词)My grandfather is over 80.我爷爷年过八十。(数词) The girl looks very beautiful.这女孩看起来挺漂亮的。(形容词) The food tastes delicious食物尝起来很香(形容词) My mother is at home. 妈妈在家。(介宾结构)My mother is not in. 妈妈不在家。(副词) His dream is to be a professional athlete.他的梦想是成为一个职业运动员。 (不定式) His subject is running around with me.他的功课就是围着我转(动名词短语)结构二:主语+不及物动词 例 He runs very fast(