Unit 5 Section Ⅲ Using language—Grammar（课件PPT）-【优化指导】2023-2024学年新教材高中英语选择性必修第一册（外研版2019）

Section Ⅲ　Using language—Grammar 过去完成时 Unit 5　Revealing nature 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature 栏目索引 分析·句子结构 知识·要点精析 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature 分析·句子结构 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature had＋过去分词 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature 知识·要点精析 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature had left had intended 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature had sat had recommended had forgotten hadn't seen 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature stayed travelled had left 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature 谢谢观看！ 返回导航 英语　选择性必修第一册 （W） Unit 5　Revealing nature [观察] 1．(教材P50)It was a young man who had left medical school without completing his degree． 2．(教材P50)What's more，he had recently received a letter from his father predicting that he would be “a disgrace to yourself and all your family”． 3．(教材P51)After Darwin had spent some time in South America，his room on the ship was crowded with samples of plants and animals he had collected． 4．(教材P51)At that time，people believed that all species had appeared on Earth at the same time，and had not changed since． 5．(教材P51)Over time，it had slowly evolved into many new species． [归纳] 过去完成时表示过去某一时刻或某一动作之前已完成的动作或状态。观察以上句子可知，过去完成时的构成是____________________。 eq \a\vs4\al(一、基本用法) 过去完成时的构成为“had＋过去分词”。主要用法如下： 1．表示某一动作或存在的状态发生在过去某一时间或某一动作之前，即“过去的过去”。 By the end of last week，they had finished the work． 到上周末为止，他们已经完成了工作。 She said that she had finished her homework． 她说她已完成家庭作业了。 2．某些动词的过去完成时表示过去未实现的希望、计划或打算。常用的动词有hope，expect，suppose，think，want，wish等。 They had wanted to help but couldn't get here in time． 他们本来想要来帮忙的，但未能及时赶到这儿。 I had hoped to send him a Christmas card，but I forgot to do so． 我本来想送他一张圣诞节贺卡，但把这事给忘了。 [即学即练]　单句语法填空 ①When I got to school I found that my classmate ________(leave)