Write the past tense and past participle of the following verbs.help paint use give carry put make find read buy 相关知识点: 试题来源: 解析 help-helped-helped paint-painted-painted use-used-used give-gave-given carry-carried-carried put-put-put make-made-made find-found-found read-read-...
4、在书面语特别是在科技报告、报刊文章中被动语态比主动语态更正式。 Form: Tense 时态 form 形式 +past 一般现在时 am/is/are +past participle 过去分词 现在进展时 am/is/are being +pp 现在完成时 have/has been +pp 一般过去时 was/were +pp 过去进展时 was/wer ...