[英文文法問題]為何有些句子加ing?

首先你要明白verb+ing (請看a) 可以構成什麼?
順便講verb+ed (請看b) 可以構成什麼?

(一) Ｔense

(二) Ａdjective

- emotional adjective
(a) It is interesting. (死物用ing(現在分詞))
(b) I was bored. (人用ed(過去分詞))

- Continous action (形作(動作)進行中)adjective
(a) I saw a running(跑步中) black cat.
- Completed action (形容(動作)己完成)adjective
(b) It is a demaged(己壞的) car.

(三) Gerund (動名詞)
(a) Verb + ing

(四) Particple (Phrase)
(a) Present Participle 表達一個 continuous and active action
(b) Past Participle 表達一個 completed and passive action.

簡單解釋如下
(a) Present Participle --- Present / Past Tense(Active) 變成ing (如play/played 變成playing)
(b) Past Participle --- Present / Past Tense(Passive) 變成 p.p. / being p.p.(如was played變成played / being played

例子(a)
They stood at the corner. They were waiting for a bus. (Active - Present Participle)
Standing at the corner, they were waiting for a bus

例子(b)
The Children were amazed by the dome. They were speechless. (Passive - Past Particple)
Amazed / Being amazed by the dome, the children were speechless.

希望幫到你!

2008-02-07 12:15:39 補充：
講漏咗Perfect Particple(a) Active 變成 having + p.p. (如 has/had played 變成having played)(b) Passive 變成 having + been + p.p. (如 has/had been played 變成having been played)

2008-02-07 12:15:58 補充：
例子(a)I have brushed my teeth. I sleep.Having brushed my teeth, I sleep.例子(b)The boy had been walking for several hours. He felt tired. (Subject相同做前面)Having been walking for several hours, the boys felt tired.

凡是加了[ ing ]的詞都有[ 進行中 ] 的意思。

例如﹕

I am playing with my cat.

我 [正在] 跟我的貓玩耍。

+ing 是因為這個English 是在表示「現在」。
eg: Now I am doing my homework.內的doing.
Doing 在這兒表示「現在」。
你現在明白了嗎？

2008-02-17 12:49:10 補充：
me the best plz

2008-02-17 12:49:50 補充：
me the best plz