读书 

Pinyin: dúshū 
Meaning：Study; read 
Sentence：You should study hard. 你应该努力读书。 

More: 

读： 

Pinyin: dú, dòu
Meaning: Comma; read
Radical: 讠
Stokes: 10
Traditional: 讀
Common words/Phrase:
读者[dúzhě] 【reader】
读音[dúyīn] 【pronunciation】
读物[dúwù] 【reading material】
读数[dúshù] 【reading】

书： 

Pinyin: shū
Meaning: Letter; book
Radical: 乙
Stokes: 4
Traditional: 書
Common words/Phrase:
书签[shūqiān] 【bookmark】 
书籍[shūjí] 【books; works】
书记[shūjì] 【secretary】
书法[shūfǎ] 【penmanship; calligraphy】