在构造句子时，它们通常搭配不同的介词和动词形式。比如，“I greeted her at the door” 和 “He was greeted by the crowd when he arrived” 是两个不同的例子说明了“greet”的不同用法。
高考常考词性变化一、名词1．名词转换为名词加后缀， 变成指人的名词(1)[er][or]farm→farmer 农场主；农民office→officer 官员profession→professor 教授author 作者mayor 市长[2019·全国卷Ⅲ阅读
此处Tom不是特指，排除C选项，boy是可数名词，必须使用冠词，排除D。填一填：1._________ is the largest continent in the world.2. _________is the hottest continent in the world.
Weheard someone go up the stairs.Someone was heard to go up the stairs.2.The hardened professional smuggler, on the other hand, is never tro
