最佳回答即取10分:hi，hello 是什麼種類的詞??

Hi 和hello是interjections, 即是感嘆詞,
用來表達說話者的感情,
e.g. Hello! How are you today?
其他例子還有: hey, oh no, ouch

要注意hello除了是interjection外,
還可以是名詞及動詞

名詞: hello, hellos
He said hello to me.
Lots of hellos are being yelled out by the children.

動詞: hello, helloes, helloed, helloing
I helloed through the phone.

**第三人稱動詞是+es, 而複數名詞+s, 兩者不同。

『hi、hello』係打招呼的意思！

Hi, Hello 是英文中的 Interjection , 即是感歎詞,感歎語。

希望幫到你!

hi，hello 是 GREETING，招呼語。詞性是 INTERJECTION，即 EXCLAMATION，感嘆語。但注意， HELLO 可作 NOUN 和 VERB，視乎用法。

e.g. Every morning they exchanged polite hellos。這裏是名詞。

hi Pronunciation (h)
interj. Informal
Used to express greeting. See Regional Note at hey.

hel·lo Pronunciation (h-l, h-)
interj.
Used to greet someone, answer the telephone, or express surprise.
n. pl. hel·los
A calling or greeting of "hello."
intr.v. hel·loed, hel·lo·ing, hel·loes
To call "hello."

還有其他例子

hello, hi, howdy, hullo, how-do-you-do - an expression of greeting;

from the free dictionary

Then I go on to the actual greeting. Write the paragraphs of chat. I might include a sincerely ending with my first name. Not always for first contact though. Examples of greeting words I use: -Hi there -Hi -Hello ...
forums.plentyoffish.com/1092646datingPostpage5.aspx - 32k -

算是exclamation 語氣詞的一種。