common

音標(biāo)發(fā)音

common的基本意思是“普遍的”“共有的”“共同的”,主要指因許多人〔物〕所共同具有或使用而常見,引申可表示“一般的”“平常的”,指普通、無特別之處,有時(shí)含有低劣粗俗之意。
common在句中常用作定語(yǔ),也可用作表語(yǔ)，其后可接介詞to。
common在句中修飾不可數(shù)名詞時(shí),前面不能加不定冠詞。
common一般解釋為“平常的”，偶爾可表示“低劣的”，“粗俗的”，所以在應(yīng)用中應(yīng)避免產(chǎn)生誤解。This is common furniture.
common sense，common knowledge和general knowledge的比較：common sense意為“常識(shí)”，通常指從經(jīng)驗(yàn)得來的，多數(shù)人都知道的。common knowledge則是在一定范圍例大家都知道的事情。 general knowledge意為“研究得來的，許多事情的常識(shí)”，反義詞是specialized knowledge（專業(yè)知識(shí)）；It is common knowledge (among the teachers) that they will soon have a new headmaster.
general knowledge test意思是“常識(shí)測(cè)試”；
common sense只在作形容詞時(shí)，可寫作common-sense。

Contractions are much more common in speech than in writing.
縮略詞在口語(yǔ)里比在書寫中常見得多。

(USUAL) the same in a lot of places or for a lot of people
(SHARED) belonging to or shared by two or more people, or things
(LOW CLASS) typical of a low social class
(LAND) an area of grass that everyone is allowed to use, usually in or near a village
(SHARED) to share interests, experiences, or other characteristics with someone or something

If something is common, it is found in large numbers or it happens often.
commonly
If something is common to two or more people or groups, it is done, possessed, or used by them all.
When there are more animals or plants of a particular species than there are of related species, then the first species is called common.
Common is used to indicate that someone or something is of the ordinary kind and not special in any way.
Common decency or common courtesy is the decency or courtesy which most people have. You usually talk about this when someone has not shown these characteristics in their behaviour to show your disapproval of them.
You can use common to describe knowledge, an opinion, or a feeling that is shared by people in general.
commonly
If you describe someone or their behaviour as common, you mean that they show a lack of taste, education, and good manners.
A common is an area of grassy land, usually in or near a village or small town, where the public is allowed to go.
If two or more things have something in common, they have the same characteristic or feature.
If two or more people have something in common, they share the same interests or experiences.
common ground&rarrsee ground