Children use language for a range of purposes. They have to learn to develop different ______, different forms of language that accomplish their purposes in different contexts.
(A) tones
(B) sounds
(C) registers
(D) homonyms

register        同義詞record, inscribe, write, enroll

n. 名詞

1.登記, 註冊[U]

No register of his death was found.沒有查到他的死亡記錄。

2.登記簿, 花名冊[C]

3.自動登錄機, 收銀機[C]

4.【音】音域, 聲域[C]

That note is in the upper register of this instrument.

那個音在該樂器的高音部。

5.(冷, 暖氣的)通風調節設備[C]

6.【文】語域[C][U]

Official documents are written in formal register.

官方文件是以正式語體寫成的。

vt. 及物動詞

1.登記, 註冊, 申報

Waldo went to the city hall to register the birth of his son.

沃爾多去市政廳為他兒子作出生登記。

2.(計器等)標示, 指示; 記錄

The thermometer registered 70 degrees.溫度計顯示七十度。

3.流露; 表達, 顯示

Her face registered surprise.她臉上露出了驚異之色。

4.正式提出

Thousands joined the march to register their opposition to the cuts in education.數千人參加遊行表示反對削減教育經費。

5.掛號郵寄; 托運

I want this letter registered. 我想掛號郵寄這封信。

vi. 不及物動詞

1.登記, 註冊

I registered at a hotel near the train station.

我在靠近火車站的一家旅館登記住宿。

2.【口】(常用在否定句中)留下印象

I told them I would be leaving, but I don\'t think it registered.

我告訴過他們我要走, 但我想他們並未留意。

registered     註冊的; 登記過的; 已掛號的

register office      【英】(辦理世俗結婚手續或出生、死亡等登記的)戶籍登記處

registered office         總公司, 總店

registered post   掛號郵件

registered trade mark= registered trademark     註冊商標

self-registering    自動記錄的

homonym    n. 名詞

1.同音異義字; 同形同音異義字; 同形異義字

2.同名異物(人)

In linguistics, a register is a variety of a language used for a particular purpose or in a particular social setting. For example, when speaking in a formal setting an English speaker may be more likely to adhere more closely to prescribed grammar, pronounce words ending in -ing with a velar nasal instead of an alveolar nasal (e.g. "walking", not "walkin'"), choose more formal words (e.g. father vs. dad, child vs. kid, etc.), and refrain from using the word ain't, than when speaking in an informal setting.

(from wikipedia)

Fromkin's Introduction to Language/ C10: Language in Society/ Language in Use

Register/style: A situation dialect. e.g. formal and casual speech