ブーン!とかボーン!とか大きな音がなるものはこわいらしい。 He doesn'tlike to loud sound like "Boom!!!"
Are you scared too?(こわい?) I'm scared too!(怖いね!) Did it scare you? (怖かった?) We were surprised.(びっくりしたよね) You were shocked.(驚いたね)
You were scared of that, right? (あれが怖かったの?) Baby, it's not scary.(怖くないよ) You'll be alright.(大丈夫だからね) Don't worry.(心配しないで) it doesn't hurt you.(痛くないから) ※…この訳はちえ&TRINさんから補足文をいただきました。
My daughter is scared of silly things, too. She thinks there is a ghost in our bathroom and can't go there by herself at night. I tell her that there is no such thing, but she is so convinced that she would rather hold it than going in there alone. She is that frightened.
あ、そうそう。”My son has scary things.” だと、「息子はビビリです」って意味とは少し違ってしまいます。この言い方だと、「息子は怖いもの(オカルト系のおもちゃとかグッズとか?)を持ってる」って意味になっちゃいます。なので、次のような言い回しが使えるかも。
My son has many things that he is scared of.
My son is afraid/scared of many things.
Particular things scares my son, and they are......
My son gets scared easily.
などなど。
あと、「痛くないから」は、もちろん、"It doesn't hurt you." でも間違いではないけど、ちょっとニュアンス的には微妙かも。 does を使うと、すでに事が起こってしまった感があるんですよね。例えば、どこかにぶつけて、ちょっとコブなんかができたときに、「痛くないでしょ」って感じで、"It doesn't hurt."(youはつけない)を使うかなぁ。