牛津译林版八年级英语上册8A Unit8 Natural Disasters Grammar课件

Grammar

Words and expression review break vi. 损坏；打破 broke

break down 出故障；坏掉 because of 由于；因为

--What was Tom doing just now? --Tom was playing football. --What was Lucy doing at 2:30 p.m yesterday? --Lucy was read ing a book at 2:30 p.m yesterday.

--What were they doingfrom 6 to 8 last night?

--They were watching TV from 6 to last night.--What were the children doing

at this time yesterday?--They were playing at this time yesterday.

基本用法

过去进行时 1.表示在过去某个时间点正在发生的动作.常与 at ten last night, at this time yesterday, at that time/moment,when I came in等连用.

2.表示在过去某段时间之内持续不断发生的动 作.常与last night, this morning, from…to (from7 to 10 this morning)连用. 区别: 昨天上午他写了一封信. He wrote a letter yesterday morning. 昨天上午他一直写信. He was writing a letter yesterday morning.

过去进行时的句式(1)肯定句： was/were + v-ing (2)否定式： was/were not + v-ing

was not = wasn’twere not = weren’t

(3)疑问句：将 was/were 调到主语前

句式改写1.They were making a snowman at that moment.(否 疑)They weren’t making a snowman at that moment.

Were they making a snowman at that moment?Yes, they were./ No, they weren’t.

2.我昨天这个时候正在搜索因特网。(否 疑) I was searching the Internet at this time yesterday.3.I was doing some shopping when the earthquake started. What were you doing when the earthquake started?

Ask and answerA:What were you doing at 7 o’clock last night?

B: ....