名詞後面幾時要加s?

When a noun is of plural form, we have to add "s" behind it.

But, sometimes, you need to pay attention to some special
cases such as waters and staff.

For "waters", it means 水域 in Chinese.
"Staff" is still "staff" whether it comes in the forms of singular ao plural.

Of course,there are a lot of words resemble the ones shown you above.

Generally speaking, you should remember two important things as follows:

1. Notice the form ( singular and plural) of a noun,especially some
special cases

2. Notice the spelling of a noun like clothes and a cloth because they are
totally different in meaning.

Hope that you'll find it useful.

有D NOUN可以數到既, 多過一樣就要加S架啦~
例如:
BOOK, 多過一本就要BOOKS
PEN, PENS
PENCIL, PENCILS
PAPER, PAPERS


2010-05-21 16:40:52 補充：
To Kahin,

STAFF只代表一個GROUP就唔駛加S.
但係如果代表唔同GROUP既就要加S. STAFFS 喇.

另外 FOOD 同 FISH都可以加S.

又係剩係冇加S既就係代表一種. 好多種類就要加返S. FOODS, FISHES.