HSK 4 grammar · adverb
共
共 — altogether / in total
Pattern
+ + +
+ +
( ) can be left out · other words may come before, between and after
How it works
The adverb 共 (often 一共) before a verb sums things up — "altogether", "in total". It comes before the verb and the total amount.
Examples
这些书共二十本。
Zhèxiē shū gòng èrshí běn.
These books are twenty in all.
我们班一共有三十个学生。
Wǒmen bān yígòng yǒu sānshí ge xuésheng.
Our class has thirty students in total.
这顿饭共花了三百块。
Zhè dùn fàn gòng huā le sānbǎi kuài.
This meal cost three hundred kuai altogether.

See it in a story
In the app, 共 is underlined wherever it appears in the stories you read, and practised with sentences from them. Free.