想問點先用been!!!(英文)

"She's" 可用作 "she is" 或者 "she has" 的縮寫 (contraction)。 在"She's been on a few marches lately." 這句，由於跟着的是 "been"，所以 "she's" 是 "she has" 的縮寫。

e.g. She has been on a few marches lately. In fact, she was on a march three times last month, and twice this month. She is on another one today, and will likely take part in the big one tomorrow.
她最近已經參加了幾次遊行。真的呀！她上月去了三次，本月去了兩次：今日也去。相信她將會參加明天的大型遊行呢！

上句的 "has been", 和其它 "verb to be (is, am are, was, were)" 一樣, 用作 main verb，不過用來解 "沒有指定是以前何時，直至目前之間，已經發生過的事。"

"Have / has been" 的另一用途，和其它 "verb to be" 一樣，是用為 "助動詞" (auxiliary or helping verb)，去幫助一個 verb 去成為 "進行式" (continuous tense) 或者 "倒裝式" (passive voice)。不同之處是 "have been 和 has been" 是專用於 "完成式" (perfect tense)。

现在完成進行式 (present perfect continuous tense):
"She has been wanting to go to University since she graduated from high school" 她自從中學畢業後已經想讀大學，直至现在還是想着。

倒裝现在完成式 (present perfect tense, passive voice):
"He has been cheated" 他己經被欺骗了。

我想知幾時用been...好多時都見到i have been xxxxxxxxxxx!!!點解有用been?

其實英文主動加被動總共有24個TENSES, 如果你懂它們你就知幾時用.


現在完成式. I HAVE BEEN AT HOME FOR 10 HOURS.
現在完成式的被動式, the book has been read for 10 hours.

現在完成進行式 Kay has been washing clothes. 被動式Clothes have been being washed.

過去完成式 Kay had washed clothes. Clothes had been washed.

過去完成進行式 Kay had been washing clothes. Clothes had been being
washed.
將來完成式 Student will have done classworks Classworks will have been done.
將來完成進行式 Student will have been doing classworks. Classworks will have been being done.



總之一句講晒要懂全部TENSES,

Been 是 Be 的past particple.

Past Participle(PP) 通常在Present Perfect,Past Perfect,or Future Perfect,仲有Perfect Continous 時用.

Have Been is Present Perfect Tense,
Present Perfect Tense在提及過去做的事,一直做到現在。
Ex.I have been to Japan.(Example 唔係太好)
上句是指我到過日本。我曾經去過日本,現在也是去過日本。

如果想講過去做的事做到現在，而且會繼續做，就要用Present Perfect Continous.Structure是has/have been verb+ing
Ex:Sally and Monna have been watching TV from 5:00.
上句是指Sally 和 Monna 由5:00 一直看電視,至現在還在看。

至於Past Perfect,是指有2件過去發生的事,而較早發生的事就會用Past Perfect.Structure is had (PP)
Had Been 是 past perfect 的一種。

至於上文的is been,就是passive voice(被動式)
passive voice 就像中文中的把和被。
小老鼠被大貓捉住了。
大貓把小老鼠捉住了。
第1句是passive voice,第2句是active voice.
is been 其實是present tense 的動詞轉成passive voice.
She is been on a few mtches lately 是指她最近參加過幾次遊行示威。
由於she 是object,所以要用passive voice.
Structure 是 is (PP)(present tense)

總結，只要be要轉成past participle,been 就要用

been=be(is/am/are)`s past particple,...........