By placing ましょう onto the end of the verb stem, it means Let's + the verb. The verb stem is obtained by removing the -masu ending from the long form.
Alternatively, this pattern is also often used as a polite way to suggest doing some activity. It is the equivalent of Shall we + the verb? in English. See the table below for some example sentences using this pattern.
|Let's play videogames.||テレビゲーム を しましょう。terebigeemu o shimashou.|
|Shall we eat sushi?||寿司 を 食べましょう か？sushi o tabemashou ka?|
|Let's drink tea at the restaurant.||レストラン で お茶 を 飲みましょう。resutoran de ocha o nomimashou.|
|Shall we go?||行きましょう か？ikimashou ka?|