陈述句
Declarative Sentence
英语的句子种类共分为四种:
陈述句(肯定句和否定句)疑问句(一般疑问句和特殊疑问句)、祈使句、感叹句
01
陈述句的概念
陈述句是陈述一个事实或者说话人的看法。它包括肯定句和否定句两种。(这个看法没有疑问色彩)
| There is a dog. |
| I like dogs.(陈述我喜欢狗这个事情) |
| There is a cat. |
| I don’t like cat.(陈述我不喜欢猫这个事情) |
02
陈述句-肯定句
1️⃣含有be动词(am,is,are)、助动词(do,have,will)
|
He is a good teacher. (be动词)
他是一名好老师。
|
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She will go shopping. (助动词)
她回去购物的。
|
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LI Ming’s father can swim. (情态动词)
李明的父亲会游泳。
|
2️⃣只有行为动词的句子,表示实在意义的动词
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I like apples. 我喜欢苹果。 |
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They play basketball after school everyday. 他们每天放学后都要打篮球。 |
03
肯定句改否定句
1️⃣含有be动词的,直接在be动词后面加not
|
She is my sister. 她是我的妹妹。 |
|
She is not my sister. 她不是我的妹妹。 |
思考be动词的过去式怎么变否定句呢?
在 was,were后面加not
| I was a football player 10 years ago I was not a football player 10 years ago |
2️⃣句中有情态动词的,直接在情态动词后面加not
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She can jump high. 她可以跳得很高的。 |
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She can not jump high. 她不可以跳得很高。 |
️常见的情态动词
can/could(能够) must(必须) should(应该) may(可能)
3️⃣
句中谓语动词是实义动词,没有be动词am/is/are,也没有情态动词can/may/must的,在实义动词前面加don’t或doesn’t,当主语是第三人称单数时,加doesn’t.相应的实动词变为原形。
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She studies English at school She does not study English at school. |
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I like this movie. I don’t like this movie. |
思考
如果是过去时,否定句怎么变呢
用did代替do和does,再加not,即didn’t+动词原形
|
She went to school by bus yesterday. She didn’t go to school by bus yesterday. |
练
| He is a good teacher. (be动词) 改:He is not a good teacher. |
| She works at school. (实义动词) 改:She doesn’t works at school. |
| Li Ming’s father can drive the car. (情态动词) 改:Li Ming’s father can not drive the car. |
| You can come in .(情态动词) 改:You can not come in . |
| It will rain tomorrow.(助动词) 改:It will not rain tomorrow. |
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