2句子.....邊句句子先岩??定係2句都唔岩??

Both of the snetences above are right.

But, their meanings are totally different.

Question 1 ask you if it is needed or not to have firemen or firewomen
and give your reasons.

Question 2 just ask you the reasons why people need firemen
or firewomen.

2010-07-25 14:30:24 補充：
Both of the sentences above are right.

2010-07-26 10:31:45 補充：
When you say " Why people need firemen/firewomen?? " ,
remember to add "do" in front of "people".

1.Why should people need firemen/firewomen? - correct in grammar

2.Why people need firemen/firewomen?? spoken English only

The proper question should be:

Why do people need firemen or firewomen?

or

Please advise why people need firement/firewomen. = indirect question and no question mark is required.

No.1 is grammatically correct.No. 2 is wrong. ‘Need’ is used as a full verb. It should be: Why do people need firemen or firewomen?---à this is much better than no. 1