Here are some examples:
* Eu te amo. (I love you.)
* O amor é um sentimento bonito. (Love is a beautiful feeling.)
* Ela tem um amor grande por seus filhos. (She has a great love for her children.)
Other ways to say "love" in Portuguese:
* Paixão (passion, infatuation)
* Adoração (adoration)
* Afeição (affection)
* Carinho (tenderness)
* Querer bem (to love dearly)
The best word to use will depend on the specific context and the nuance you want to convey.