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How Do We Make Negative Sentences in Present Simple?

To make a sentence negative in the Present Simple, we add a special word before the main verb. This word is don’t 或 doesn’t.

These are short forms:

• don’t is short for do not.
• doesn’t is short for does not.

The main verb in the sentence always stays in its base form. This means it does not change, even for he, she, it.

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When Do We Use ‘Don’t’?

我们使用 don’t when the subject of the sentence is:

• I
• You
• We
• They
• Or a plural noun (e.g., my friends, the students).

The structure is: Subject + don’t + base form of the verb.

When Do We Use ‘Doesn’t’?

我们使用 doesn’t when the subject of the sentence is:

• He
• She
• It
• Or a singular noun (e.g., my dad, the dog).

The structure is: Subject + doesn’t + base form of the verb. Remember, the verb does not end in ‘-s’ after doesn’t.

Present Simple Negative Forms

主题	Negative Form	Main Verb
I	don’t	work
You	don’t	work
We	don’t	work
They	don’t	work
He	doesn’t	work
She	doesn’t	work
It	doesn’t	work

示例

• I don’t eat meat.
• You don’t live in a big city.
• We don’t watch TV in the morning.
• They don’t play football on Tuesdays.
• He doesn’t like pizza.
• She doesn’t work on weekends.
• It doesn’t rain much in summer here.

练习

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西班牙语母语者常犯的错误

Spanish speakers often say I no like coffee. This is incorrect in English. You must use don’t 或 doesn’t. The correct way is I don’t like coffee.

Another common mistake is adding ‘-s’ to the verb after doesn’t. 例如，, She doesn’t likes pizza is wrong. The correct form is She doesn’t like pizza. The verb always stays in its base form after don’t 或 doesn’t.

常见问题

What is the short form of do not and does not?

The short form of do not 是 don’t. The short form of does not 是 doesn’t.

Does the verb change after don’t or doesn’t?

No, the main verb always stays in its base form after don’t 或 doesn’t. 例如，, He doesn’t eat, not He doesn’t eats.

Can I use don’t or doesn’t for all verbs?

You use don’t 或 doesn’t for most action verbs in the Present Simple. For the verb to be (am, is, are), you make it negative differently (e.g., I am not, He is not).