下面是小编为大家整理的Grammar,,,,,,英语学习材料,供大家参考。
动词have的一般现在时
英语中有多种时态,当表示主语现在的状态时,要用一般现在时。我们在前面已经学习过be动词的一般现在时,如:They're on the sofa. They're hers. I'm fine.等。本单元我们学习含有动词have (有)的一般现在时。
动词have (有)用于一般现在时,其形式要随主语的变化而变化。仔细观察下面表格中例句的各种句式的基本结构及谓语部分的构成,然后补全结论部分所缺内容。
【观察】
肯定句
否定句
I / We / They?have?a baseball.
I / We / They?don’t have?a baseball.
Bob / He / She?has?a brother.
Bob / He / She?doesn’t have?a brother.
一般疑问句
简略答语
Do?you / they?have?a baseball?
Yes, I / we / they?do.
No, I / we / they?don’t.
Does?Bob / he / she?have?a brother?
Yes, he / she?does.
No, he / she?doesn’t.
【结论1】
通过观察上面的例子,我们可以总结出含有动词have(有)的各种句式的基本结构:
1.?肯定句:主语?+ have / has + ...
2.?否定句:主语?+ don't / doesn't + have + ...
3.?一般疑问句:助动词Do / Does +?主语?+ have + ...?
【结论2】
1.?在含有动词have (有)的一般现在时的肯定句中,当主语是第三人称单数时用________,当主语是其他形式时用________。
2.?将含有动词have / has (有)的一般现在时的肯定句变成否定句或一般疑问句时,要借用助动词do或does,且have要用原形。当主语是第三人称单数时,助动词要用________,当主语是其他形式时,助动词要用________。
3.?对Do或Does开头的一般疑问句进行简略回答,可以用“Yes,?主语(人称代词) + do / does.”或“No,?主语(人称代词) + don't / doesn't.”。
Key: 1. has; have2. does; do?
【运用】根据对话内容及括号内所给词的提示填空。
A:?Hi, Bob! Is this your soccer ball?
B:?No, it isn't. I (1)________(not have) a soccer ball.?
A:?Does David (2)________(have) a soccer ball?
B:?Yes, he (3)________(do). Let me call and ask him for it.
A:?But he (4)________(not have) a telephone.?
B:?Well, we can call his sister Anna. She (5)________(have) a telephone, and I know her telephone number.
A:?OK.?
答案
1. don't have 2. have 3. does
4. doesn't have 5. has