第三人称单数动词变化规则

A. 第三人称单数动词变化规则 B. a/an, some和any的用法 C. many和much的用法 D. 一般过去时 E. 一般疑问句、特殊疑问句和否定句 F. 形容词与副词。G. 物主代词。I. 定语从句。A. Write these sentences again. Begin each sentence with He.。2. I am learning English.。He must write a letter.。9. I do a lot of work every day. He does a l..