疑问句和否定句的变化：
1 I like rice.
I do not like rice. = I don't like rice.
Do you like rice?
2 He likes rice.
He does not like rice. = He doesn't like rice.
Does he like rice?
What does he like?
He sometimes goes to park with his sister.
3 He liked rice in the past.
He did not like rice in the past.
Did he like rice in the past?
Where did you go yesterday?
do - does - did is - are
(原形) （单三） （过去式） was - were (过去式)
练习翻译：
1 Do you play football every day?
2 My mother watches television every night.
3 What did the teacher say yesterday?
4 He was a basketball player in the past.
5 We were in China last year.
6 Does Tom often run on the playground?
过去进行时：
过去进行时主要表示过去某一时刻正在进行的动作，或表示过去某一阶段一直在进行的动作。
过去进行时的结构：was/were + 动词ing形式
用法1：
当句子中有‘when’和‘while’的过去时连句时（when和while译为‘当...时候’），这是主句通常用过去进行时。
例：I was taking a walk when I met him. 我正在散步，突然遇见了他。
We were playing outside when it began to rain.
我们正在外边玩，这时下起雨来了。
用法2：表示过去某一阶段一直在进行的动作。
I was having a talk with Li Hua at that time. 那时，我正在跟李华谈话。
过去进行时与一般过去时的区别 ：
过去进行时强调动作在过去某时刻正在进行或持续，而一般过去时表示过去的一个动作和动作的完成。
My mother watched TV last night. 我的妈妈昨天晚上看了电视。（过去的一个动作/完成的动作）
My mother was watching TV all night yesterday. 我的妈妈昨天整个晚上都在看电视。（过去某时间段动作一直持续）
My mother was watching TV when I walked in the living room.
当我进入客厅时，我的妈妈正在看电视。（过去某时刻动作正在进行）
单词：
1 when英 [wɛn] conj.当…时；在…时；adv. 什么时候，何时；
2 while英 [wʌɪl] conj. 当……的时候
3 take a walk 散步
4 meet英 [miːt] vt. 满足；遇见
[ 过去式 met 过去分词 met 现在分词 meeting ]
5 outside英 ['aʊtsaɪd] adv. 在外面，向外面
6 begin to do... 开始做...
begin 英 [bɪ'gɪn] vt. 开始
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