动词加小品构成的起动词作用的短语叫短语动词(Phrasal Verb)。例如:Turn off the radio. 把收音机关上。(turn off是短语动词)短语动词的构成基本有下列几种:1) 动词+副词,如:black out;2) 动词+介词,如:look into;3) 动词+副词+介词,如:look forward to。构成短语动词的副词和介词都统称为小品词(Particle)。
名词性从句及不定式、动名词作主语时,谓语动词一般用单数形式。【例如】To finish the work in advance is what he wants.Smoking cigarettes is dangerous to your healthWhat seems easy in theory is difficult in practice.What caused the accident is a complete mystery.但是,what引导名词从句作主语时,其表语是复数形式时,系动词也可以是复数形式。【例如】What we badly need here are qualified teachers.</p 产品:澳博培训供货总量:不限产品价格:议定包装规格:不限物流说明:货运及物流交货说明:按订单