Unit 3 Festivals and customs Section Ⅲ　Grammar and usage 课件（共46张）+讲义

Section Ⅲ　Grammar and usage Grammar———过去将来时 概念:过去将来时描述从过去某一时间看将要发生的某个动作或存在的某个状态。 一、过去将来时的常见结构及其用法 (一)过去将来时的主要形式:would+动词原形 [先感知] ①Yet,very few people knew that future avatars would have such a wide variety of forms and uses.(北师必二U4) 然而,很少有人知道,未来的虚拟形象会有如此多样的形式和用途。 ②They said the letter inside would explain what it was all about,but he had to postpone opening it until 2 o’clock.(人教必三U5) 他们说里面的信会解释一切,但他得推迟到两点钟再打开。 ③Many would become sick,due to the extreme cold and low air pressure,and a few would even lose their lives.(外研必三U5) 由于极端严寒与低气压,许多人会生病,甚至有少数人会丢掉生命。 ④He couldn’t ensure that he would arrive on time. 他不能保证他能准时到达。 ⑤If I were you,I would not do that. 要是我是你的话,我就不会那样做。 ⑥If it rained tomorrow,we would stay at home. 如果明天下雨,我们就待在家里。 [会发现] 在句①和句②中,would do 用于宾语从句中,主句谓语为一般过去时。 在句③中,would do表示一种习惯性动作,可以翻译为“会”。 在句④中,would do表示计划或安排。 在句⑤和⑥中,would do用在虚拟语气中。 [明规则] “would+动词原形”表示: 1.表示从过去某时来看将要发生的动作或存在的状态。常用于宾语从句中。 2.表示过去的某种习惯性行为,只用would。 3.表示根据计划、安排即将发生。 4.用于虚拟语气中表示对现在或将来情况的虚拟。 (二)过去将来时的其他形式 [先感知] ①When I was going to launch the app,I spoke to lots of experts and app developers who gave me great advice and guidance.(北师必二U4) 当我准备推出这款应用程序时,我与很多专家和应用程序开发人员进行了交谈,他们给了我很好的建议和指导。 ②Philip bought two tickets for The Phantom of the Opera.He was going to watch this musical with his girlfriend on the weekend.(人教必三U5) 菲利普买了两张《歌剧魅影》的票。他打算周末和女朋友一起观看这部音乐剧。 ③We were about to set out on a trip when it suddenly began to rain heavily. 我们正要出发去旅行,这时突然下起了大雨。 ④I felt nervous because I was soon to leave home for the first time. 我感到紧张,因为我很快就要第一次离开家了。 ⑤They were to succeed because they worked so hard. 他们那么努力,注定会成功的。 [会发现] 在句①和②中,“was/were going to+动词原形”表示过去准备、计划做某事。 在句③中,“was/were about to+动词原形”意为“正要、即将”。 在句④和⑤中,“was/were to+动词原形”,表示曾计划做某事,但不表明计划是否被执行。 [明规则] 1.“was/were going to+动词原形”表示过去准备、计划做某事,或将要发生某事。 2.“was/were about to+动词原形”意为“正要、即将”,表示过去即将发生的动作。常用于句型“be about to do...when...”,表示“正要做……这时……”。 3.“was/were to+动词原形”表示曾计划做某事,但不表明计划是否被执行;或表示命中注定要发生的事。 [再运用]　选词填空 would,was going to,was to,was about to 1.It seemed as if it was going to rain. 2.Although she was ill,she said she was to/would be seen in the lab the next day. 3.The coach was about to give up the game when the captain scored a goal. 4.At college,he didn’t know that he was to becom ... ...