請問 is/are, do/does, 及 have / has 之用法......

is/ are解「係」，介紹人物、身材，事件嘅顏色、特性：

He,she,it 用「is」/ they,we,you用「are」/ I用「am」

He is John. He is fat. (他是John. 他是胖胖的。)
She is May. She is clever.(她是May。她是聰穎的。)
It is a cat. It is white.(牠是貓。牠是白的。)
This is a table. It is hard. (這是一張桌子。它是硬的。)

have/ hasn解「有」，包括人的特徵：
He,she,it 用「has」/ they,we,you,I 用「have」

Mary has one brother. He has big eyes.(Mary 有一個兄/弟。他有大眼睛。)
I have long legs.(我有長腿。)
They have three pencils.(他們有三枝鉛筆。)

does/ do 比較複雜
1) 用作動詞，解「做」
I do my homework.(我做我的功課。)
He does his work well.(他的工作做得不錯。)
2) 放在實義動詞前，以構成疑問句或否定句，解「有沒有/會不會」(在疑問句)/「沒有/不會」(在不定句)
I don't like Mary.(我不喜歡Mary。)
Peter doesn't watch TV in the afternoon.(Peter 沒有/不會 在下午看電視。)
Does she play in the classroom?(她在課室玩耍嗎？)
Yes, she does. / Yes, she play(s) in the classroom.*******
No, she doesn't./ No, she doesn't play in the classroom.

Do they buy this book?(他們有/會買這本書嗎？)
Yes, they do. / Yes, they buy this book.
No, they don't./ No, they don't buy this book.
.

2007-05-17 11:31:05 補充：
「沒有/不會」(在否定句)