N4 grammar
〜(よ)う
u
The plain let us form
Formationgodan: う row shifts to お + う. ichidan: stem + よう
This is ましょう with the politeness taken off, used with people you speak plainly to. On its own it suggests doing something together, and in your own head it is the shape a decision takes. It also feeds several longer patterns, so it is worth getting comfortable with early.
Examples
〜(よ)う is marked in each sentence. Tap any word for its dictionary entry.
うーん、いいなあ。そこへ行こう。
Hmm, that's a good idea. Let's go there.
私をあざむこうとしてもむだです。
It is no use trying to deceive me.
今日はビーチでのんびりしよう。
Let's take it easy at the beach today.
いい子にしていたら、あめをあげよう。
If you are a good girl, you shall have candy.
このケーキを試食してみよう。
Let's try this cake.