2019-2020学年人教版高中英语必修3同课异构课件:Unit 4 单元小结 同课异构(5)
2019-2020学年人教版高中英语必修3同课异构课件:Unit 4 单元小结 同课异构(5)第3页

1. They were in time to produce carbon dioxide, nitrogen, water vapour and other gases. 最终产生了二氧化碳、氮气、水蒸气和其他多种气体。 They were followed in time by land animals. 随后,陆地上出现了动物。

in time after a period of time when a situation has changed 经过一段时间后,最后,终于