had
/ˈhæd/KK
變化形
hads
hadded
hadded
hadding
1.
有、擁有、經歷、吃喝、舉行等的過去式
用作實義動詞，表示某人在過去擁有某物、與某人有某種關係、經歷某事、吃喝某物，或進行活動等。
用法：had 可搭配名詞受詞，也可出現在 have to 的過去式 had to 中，表示過去「不得不」。
My grandfather had a small tea shop near the station.
我祖父以前在車站附近有一間小茶行。
I had to take the bus because it was raining.
因為下雨，我不得不搭公車。
We had lunch at school after the test.
考試後，我們在學校吃了午餐。
還有 2 個進階的意思（國小之後才會學到）
2.
已經……過
與 had、has 或 have 搭配形成完成式，表示某個動作或狀態在某個時間點以前已經發生或持續。
用法：過去完成式的結構是 had＋過去分詞，不是 had＋原形動詞。had 對所有人稱都相同。
By last Friday, I had waited for it for two weeks.
到上週五時，我已經等它兩週了。
She had finished her homework before her friends came to see her.
她的朋友來找她以前，她已經寫完作業了。
The movie had started when we got there.
我們到那裡時，電影已經開始了。
3.
最好……
用於 had better＋原形動詞，表示強烈建議，常暗示若不照做可能會有不好的結果。
用法：had better 後面接原形動詞，不接 to。否定式是在 better 後加 not，成為 had better not＋原形動詞。口語中常縮寫為 ’d better。
You had better bring an umbrella because the weather report says it may rain.
你最好帶一把雨傘，因為天氣預報說可能會下雨。
We had better not miss the last train.
我們最好不要錯過最後一班火車。
常見錯誤
I had went to Taipei yesterday.
I went to Taipei yesterday.／I had gone to Taipei before the meeting started.
I had a lunch with my classmates.
I had lunch with my classmates.
You had better to leave now.
You had better leave now.
She had finish her homework before dinner.
She had finished her homework before dinner.
相關字詞
學習提示
・had 可是實義動詞 have 的過去式，也可作完成式助動詞；要看後面接的結構判斷。
・看到 had＋過去分詞時，常是在用過去完成式，重點是「比另一件過去的事更早」。
・had better 的 had 不表示過去時間；它是固定的建議句型。
・句子如 I had had breakfast before class 雖然有兩個 had，但文法正確：第一個是助動詞，第二個是 have 的過去分詞。