Verb (Past perfect tense) 動詞(過去完成式)

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(1) When something had already happened at a time in the past, we use "Past Perfect Tense".
當一個動作是在過去某個時間已經發生的話，我們會用「過去完成式」。
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! m9 I% T9 T5 kFor example 例如：
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2 P9 K+ D8 V( D- b. o9 ^! n/ kYesterday at 8:45 pm: Amy finished her homework.
Yesterday at 9:00 pm: Amy's mother came home.
7 K1 o: R9 k; u0 j( ]/ ^2 Q2 g4 zAmy had done her homework when her mother came home at nine o'clock yesterday.
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Yesterday at 3:30 pm: We went into the hospital and visited our grandma.
Yesterday at 4:00 pm: We left the hospital.
Yesterday at 4:05 pm: Daddy called us.
6 l  F4 S: s/ y9 i: ^# zWe had already visited our grandma in hospital when daddy called us in the afternoon yesterday.
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Note:
From the above examples, you can see we often use Past Tense with Past Perfect Tense.
從以上例子可見，「簡單過去式」常與「過去完成式」一起使用。
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(2)　When we use the "Past Perfect Tense", we write the verb in this way:
& I1 p# l* m* c+ X我們用「過去完成式」時，會把動詞寫成這樣子：
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had + past participle
(had + 過去分詞)

For example 例如:
3 h9 e2 M  V6 Z- Zhad given
had finished
had done
had spoken
' C3 w3 q4 P, q0 Z2 v6 mhad gone
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Note 1:
We always use "had" for all subjects (i.e. I, We, You, They, He, She, It).
* k2 V* M: N4 M! }; b' ]: K( P無論句子中的主語(即I, We, You, They, He, She, It)是怎樣，我們也是用 "had"這個字。

Note 2: What is the "past participle" of a verb? For most of the verbs, you just have to add "ed" at the end to change it into "past participle". For the others (i.e. irregular verbs), you may look up in your dictionary or check it out in this link.
4 n9 n$ T. z7 V8 v2 M; o3 k  G想知道某動詞的「過去分詞」是甚麼？大部分動詞的「過去分詞」只是在動詞的最尾加上 "ed"，至於其他(即不規則動詞)，你可查一下你的字典或按此瀏覽。

8 X" }. ~  g) |) s; l6 h(3) How to form questions and negative sentences in "Past Perfect Tense"?
如何以「過去完成式」組成問句和否定句？

Questions:
: b/ I, s4 T" D6 ^: c+ A$ h4 ?Had Amy finished her homework when her mother came home yesterday?
6 D3 e+ @- k8 T5 O6 iNegative sentences:
Amy had not finished her homework when her mother came home yesterday.
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