肯定句：

口訣：我和你都用have，has用于他、她、它，所有復數都用have。

第一人稱：I have…

第二人稱：You have…

第三人稱：He/She/It/Jim has…

復數：They/The girls/The boys/The children/Jim and Tom have…

否定句：

第一人稱：I don't have…

第二人稱：You don't have…

第三人稱：He/She/It/Jim doesn't have…

復數：They/The girls/The boys/The children/Jim and Tom don't have…

疑問句：

第一人稱：DoI/we have…

第二人稱：Doyou have…

第三人稱：Dothey have…

Doeshe/she/it have…

1.在肯定句中，當主語為第三人稱單數，或單數可數名詞時，have要變成相應的單數形式has.主語為其他人稱和數時，則用have.

① I have a cat.(我有一只貓。)

② You have a farm.(你有一個農場。)

③ They have pears.(他們都有梨子。)

④ It hasa long tail.(它有一根長尾巴。)

⑤ She hastwo big eyes.(她有一雙大眼睛。)

⑥ He hasa cat.(他有一只貓。)

⑦ Tom hasa sister.(湯姆有一個姐姐。)

2.實義動詞have(有)的一般現在時的肯定句在變為否定句時，要借助助動詞do和does，且have要用原形。如果主語是第三人稱單數，助動詞要用does，當主語是其他人稱時助動詞用do.

① I have a cat. / I don'thave a cat.

② You have a farm. / You don't have a farm.

③ They have pears. / They don'thave pears.

④ It has a long tail. / It doesn'thavea long tail.

⑤ She has two big eyes. / She doesn't havetwo big eyes.

⑥ He has a cat. / He doesn't havea cat.

⑦ Tom has a sister. / Tom doesn't havea sister.

3.在進行疑問句轉換時，要借助助動詞do/does.在句首用do/does，同時將has還原成have.

肯定句用“Yes，主語+do/does.”回答。

否定句用“No，主語+don't/doesn't.”回答。

① You have a farm.

→ Do you have a farm?

→ Yes，I do. / No，I don't.

② They have pears.

→ Do they have pears. ?

→ Yes，they do. / No，they don't.

③ It has a long tail.

→ Does ithave a long tail?

→ Yes，it does. / No，it doesn't.

④ She has two big eyes.

→ Does she havetwo big eyes?

→ Yes，she does. / No，she doesn't.

⑤ He has a cat.

→ Does he havea cat?

→ Yes，he does. / No，he doesn't.

⑥ Tom has a sister.

→ Does Tom havea sister?

→ Yes，he does. / No，he doesn't.

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