Advice, guidance, proposition

たらどう

Used to ask about a situation, usually to give advice. Translates to “why don’t you” or “how about”. Used with the たら form of verbs.

Example

ゲームをしたらどうか。 How about you play a game?

たらいいですか

Used to ask about an advice or instructions. Translates to “what should I do”. Used with the たら form of verbs.

Example

何を飲のんだらいいですか。 What should I drink?

ことだ

Means “should do”. It is used for suggestion or giving advice in spoken language. Used after verbs with a る or ない ending.

Example

砂糖さとうが多おおすぎる食たべ物ものを食たべないことだ。 You shouldn’t eat food that is too high in sugar.

ようではないか

Means “why don’t we”, “shall we”, “let’s do”. Used with a verb in the volitional form (おう). ではないか can be replaced by じゃないか.

Examples

一緒いっしょに飲のもうではないか。 Why don’t we have drinks together?