"Was Warned that ..." (correct word choice / use of passive?)


I am trying to write out a short speech to say after my companies morning
exercises, and I have chosen the very exciting topic of ... the weather!

Anyway I wish to convey this meaning in my sentence:

> I was also warned that Japan has very hot summers and that I should be
> careful

So far I have:

> すごい暑い夏があるので、気を付けてくださいも言い聞かせられました

I am wondering a few things:

  1. Is the choice of 言い聞かせる appropriate, or does it have too sever of a meaning?
  2. Is the use of passive voice appropriate here? In my mind it definitely is but I am not confident in that.




> I was also warned that Japan has very hot summers and that I should be
> careful.

How about...

> 日本の夏はとても(orすごく)暑いので気をつけるように、とも言われました。

「～～ように(と)言う」 means "tell someone to do~~".  
Its passive form is 「～～ように(と)言われる」"I am told to do~~"  
The も in と **も** 言われました means "also".  
(We don't say ～～よう **に、も** 言われました.)




> I was also warned that Japan has very hot summers and that I should be
> careful.

How about...

> 日本の夏はとても(orすごく)暑いので気をつけるように、とも言われました。

「～～ように(と)言う」 means "tell someone to do~~".  
Its passive form is 「～～ように(と)言われる」"I am told to do~~"  
The も in と **も** 言われました means "also".  
(We don't say ～～よう **に、も** 言われました.)

