YOU SAID:

If I say good morning to my grandmother she is going to be surprised.

INTO JAPANESE

私が祖母にはおはようございますと言ったら、彼女は驚くでしょう。

BACK INTO ENGLISH

She would be surprised if I told my grandmother good morning.

INTO JAPANESE

おはようおばあちゃんに言ったら彼女は驚くだろう。

BACK INTO ENGLISH

Good morning, she'll be surprised if I tell grandma.

INTO JAPANESE

おはようございます、私がおばあちゃんに言ったら、彼女は驚くでしょう。

BACK INTO ENGLISH

Good morning, she would be surprised if I told grandma.

INTO JAPANESE

おはようございます、私がおばあちゃんに言ったら、彼女は驚くでしょう。

BACK INTO ENGLISH

Good morning, she would be surprised if I told grandma.