點用ｉｎｇ＆ｅｄ

形容人用ed
物件或死物用ing

例:
I feel interested.
The movie is very boring.

2006-11-09 19:19:41 補充：
第一句的amazed係kitty的感覺所以用ed第二句係形容本書用ing

1. She was amazed - This is a PASSIVE VOICE expression; normally this form of VERB is combined by: a VERB-TO-BE (is, are, was, were) + a PAST PARTICIPLE.

She was amazed by his knowledge.
The boy is killed in the accident.

This kind of expression represents that the SUBJECT (She / The boy) is in a passive role in the ACTION (amaze / kill) done upon it by the OBJECT (his knowledge / the accident).

2. Amusing is an ADJECTIVE, NOT a verb here. The only verb here is WAS. ING-FORM(or GERUND) could be used as a noun, an adjective or like a verb.

kitty的amazed係因為只係當時的感覺, 過左之後就無的,所以係過去式
而本書係永遠都係咁好笑, 不會變的, 所以用ing

因為個字既part of speech
...第一個amazed係動詞
amazing係形容詞,句野係話kitty俾Ted既知識"震驚到"

第二句係形容詞
即係好似interesting咁
加ing就係amuse既形容詞既form

通常加左ed都係被動、已經發生過既動詞
加ing就係形容詞、進行中既動詞

Because there has ' was ' !! If the sentense has ' was ' that verb to be , you need to add
' ed ' !!
If you want to say something that you think, you need to add ' ing ' !!~