她把重点放在介词的使用上.She lays a lot of emphasis on the usage of prepositions.介词和连词是小品词.Prepositions and conjunctions are particles.3加6等于9.(注意,此句中的plus是 介词,plussix是介词短语,作three的 定语,因此,动词用makes, 不用make ) .Three plus six makes nine....
He was supposed to go back to Bergen on the last bus, but of course the accident prevented him...他本来要乘最后一班汽车回卑尔根，但当然，这起事故使他没能回去。Bruce engaged low gear and drove at a terrifying speed, keeping the front wheels astride the...