英语语法精讲精练：should的用法
should的用法：
should用来提出建议和忠告，后边加动词原形，否定句直接在should后边加not.
例如：I think you should eat less junk food.
我认为你应该少吃垃圾食品。
She drives a lot and she seldom walks. So I think she should walk a lot.
她经常开车，很少走路。所以我认为她应该多走路。
Students shouldn’t spend too much time playing computer games.
学生们不应当花太多的时间玩计算机游戏。
学习向别人提建议的几种句式：
(1)I think you should…
(2)Well, you could…
(3)Maybe you should …
(4)Why don’t you…?
(5)What about doing sth.?
(6)You’d better do sth.
练一练
用should或shouldn’t填空
1. I can’t sleep the night before exams.
You ______ take a warm shower before you go to bed.
2. Good friends ______ argue each other.
3. There is little milk in the glass. We _______ buy some.
4. They didn’t invite you? Maybe you ______ be friendlier.
5. I am a little bit overweight. So I think I _______ do exercises every day.
答案：1. should 2. shouldn’t 3. should 4. should 5. should
英语语法精讲精练：过去进行时
过去进行时
过去进行时表示过去某一点时间正在进行的动作或者过去某一段时间内一直进行的动作。
1. 构成
was /were + doing，例如：
I was watching TV at 9 o’clock last night.
at 9 o’clock last night是时间点
They were playing football all afternoon.
all afternoon是时间段
2. 过去进行时的标志词
at 8 o’clock last night, this time yesterday等。例如：
I was having lunch at home this time yesterday.
昨天的这个时候我正在吃午饭。
At that time she was writing a book.
那阵子她在写一本书。(表示她在那段时间里一直在做那件事情。)
练一练
用括号中所给动词的适当形式填空。
1. This time yesterday I ____ ______(read)books.
2. At 9 o’clock last Sunday they ______ ______(have)a party.
3. When I _____(come)into the classroom, she ________ ______(read)a storybook.
4. She _____ ______(play)computer games while her mother ____ ______(cook)yesterday afternoon.
5. I _____ ______(have)a shower when you _______(call)me yesterday.
答案：1. was reading 2. were having 3. came; was reading
4. was playing; was cooking 5. was having; called
英语语法精讲精练：if引导的条件状语从句
if引导的条件状语从句
结构：if+一般现在时，主语+将来时
含义：如果……，将要……
例如：If you ask him, he will help you.
如果你请求他，他会帮助你。
If need be, we’ll work all night.
如果需要，我们就干个通宵。
练一练
1. 如果你参加聚会，你将会过得很开心。
If you ________ the party, you __________.
2. 如果明天下雨，我们将不去野餐。
3. 如果你经常听英文歌，你将会喜欢英语的。
If you often ________, you _________________.
答案：
1. If you go to the party, you will have a good time
2. If it rains tomorrow, we won’t go to the picnic
3. If you often listen to English songs, you’ll like English