He bought a new MP4.这个句子是什么结构?

He bought a new MP4.这个句子是什么结构? He bought a new car是什么时态 He wanted to bought a new book. He bought a new house last year. my father have bought a new bicycle for me这个句子对不对 帮我把这个句子变成被动语态：My parents bought me a new dress He has bought it 这个句子对吗 My father bought a new computer yesterday结构 he bought a new car .改疑问句did he bought a new car?还是 did he b He have already bought a new bike改错 he bought a new bike last week (改为否定句) He uncle bought him a new toy car.[同义]