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北师大版(2019)选择性必修第三册Unit 9 Human Biology Lesson 1 To Clone or Not to Clone 完成时课件(28张PPT)
更新日期:2025-06-08,北师大版(2019)英语课件、文件大小:4.2MB

课件-北师大版(2019)选择性必修 第三册Unit 9 Human Biology Lesson1To Clone or not to Clone课件(共25张PPT)
(共28张PPT) UNIT 9 Human Biology Lesson 1 To Clone or Not to Clone 语法完成时 The forms (形式): present perfect 现在完成时 have / has done present perfect continuous 现在完成进行时 have / has been doing past perfect 过去完成时 had done past perfect continuous 过去完成进行时 had been doing 1现在完成时 l.形式:主语+have/has+done 2.用...
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