完成時態(tài)
Remember that the tense of a verb refers to the time of the action or state of being.
動詞的時態(tài)指的是行為或狀態(tài)所處的時間。
The perfect tenses expresses action that is already completed.
完成時態(tài)表示已經(jīng)完成的動作。
The present perfect tense expresses a present action that began in the past and is now completed in the present.
現(xiàn)在完成時態(tài)表示開始于過去，現(xiàn)在已經(jīng)完成的行為。
The past perfect tense expresses an action that began in the past, was completed in the past before something else occurred.
過去完成時態(tài)表示在其他事情發(fā)生前開始于過去，并在過去完成的行為。
The future perfect tense expresses an action that will be completed by some point in the future.
將來完成時態(tài)表示將來某個時間點完成的動作。
Examples of The Perfect Tense:
完成時態(tài)的例句：
To form the perfect tenses, you must use auxiliary verbs.
完成時態(tài)需要使用助動詞。
Present Perfect-Present tense of have + past participle
現(xiàn)在完成時態(tài)-have的現(xiàn)在時態(tài)+過去分詞
Past Perfect-Past tense of have + past participle
過去完成時態(tài)-have的過去時態(tài)+過去分詞
Future Perfect-Will or shall + have + past participle
將來完成時態(tài)-Will 或shall + have + 過去分詞
It is easier to understand the perfect tenses by looking at some examples:
下面的例句會幫助理解完成時態(tài)：
1) I have put the money in the machine. (present perfect)
1)我已經(jīng)把前放進(jìn)機器了。(現(xiàn)在完成)
2) I had finished my homework before mom called me for dinner. (past perfect)
2)媽媽叫我吃飯前我就寫完作業(yè)了。(過去完成)
3) By the time the show is over, Marie will have danced for 40 minutes. (future perfect)
3)演出結(jié)束時，Marie已經(jīng)跳了40分鐘舞了。(將來完成)
4) The class has been outside for recess. (present perfect)
4)學(xué)生已經(jīng)去外面休息了。(現(xiàn)在完成)
5) Jeff tried to hide the vase because he had broken it. (past perfect)
5)Jeff 試圖把他打碎的花瓶藏起來。(過去完成)
6) By the time I am 18, I will have saved over $2,000. (future perfect)
6)我到18 歲時，就會有2000美元存款了。(將來完成)
7) My sister has taken martial arts lessons for six years. (present perfect)
7)我姐姐已經(jīng)學(xué)了6年武術(shù)了。(現(xiàn)在完成)
8) I had watched almost all of the show before the power went off. (past perfect)
8)斷電前，我?guī)缀醢阉械难莩龆伎赐炅恕?過去完成)
9) Do you think the lunchroom will have cooked enough pizza for all of us? (future perfect)
你認(rèn)為午餐會準(zhǔn)備充足的比薩餅給所有人吃嗎?(將來完成)
10) Will had won the race every year until this year. (past perfect)
10)Will在今年前的每年都會贏得比賽。(過去完成)
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