1.lady have a bag

2.i want go market

3.she buy the apple

4i like strawberry

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* Correction:     Student's sentence        Corrected sentence        Grammar explanation       Better sentence    

1.lady have a bag

The lady has a bag.

Use the article "The" to introduced your noun "lady". Instead of "have" use "has" because your subject is singular. You only use "have" for plural subjects! Put a period (.) at the end of your sentence.

2.i want go market

I want to go to the market.

Always capitalize the first letter of your sentence.

Pattern: go to the + place ~ I want to go to the market.

3.she buy the apple

She buys the apple.

Capitalize the first letter of your sentence. Follow the first subject-verb agreement rule: singular subject must take a singular verb, thus your verb should be "buys". Put a period (.) at the end of your sentence.

She buys an apple.

4i like strawberry

I like strawberries.

Capitalize the first letter of your sentence. Pattern: I like + plural form of the verb~ I like strawberries.