什么情况下要用should do答:almost 2.疑问副词(放在特殊疑问句的句首),如:how,when,where,why 3.关系副词(放在定语从句句首),如:when,where,why 4.连线副词(放在名词从句句首),如:how,when,where,why,whether 二.副词在句中的作用:副词修饰动词,形容词,名词,副词或全句,在句中的作用如下 1.作状语: a....
hang可以构成哪些动词短语?答:英语动词不定式短语,可以和哪些词构成 不定式的词性等同于动词,所以构成短语时与动词的用法相同,主要与副词、介词、名词短语构成。如,to go home, to turn off/on, to take care of,to make use of, to get better/worse, to do one's duty, to set up, to look up/in/down, to see through, to ...