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(1) 可用于進行時態，但一般不用于被動語態。如：

誤：Lunch is had by him.

正：He is having lunch. 他在吃中飯。

(2) 不與 got 連用。如：

誤：I’d like to have got a look at it.

正：I’d like to have a look at it. 我想看看它。

(3) 一般不用縮略式。如：

誤：We’d a good time at the party.

正：We had a good time at the party. 我們在晚會上玩得很 高興。

(4) 構成否定式和疑問式時，必須用助動詞 do。如：

誤：When had you breakfast?

正：When did you have breakfast? 你什么時候吃早餐?

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