If I am not mistaken, did you want to know the Japanese word for "to be"? If so, then it's "naru (なる)". Example: 1. I will try my best TO BECOME a good man. ==> Watashi wa ii hito ni NARU you ni gambarimasu. 私はいい人になるようにがんばります。 2. I want to be a banker in the future. ==> Shourai, watashi wa ginkouin ni naritai(desu). (*NARU=>NARITAI; **Add the "~desu" to make it more polite.) 将来、私は銀行員になりたい(です)。 I hope I was able to answer you correctly! I am wrong then I apologize for that... m(^o^)m

①---ha~desu.(da.) For example:I am a student(watashi ha gakusei desu.) ②---ha~ni imasu.(arimasu.) For example:there is a cat under a desk(neko ha tukue no sita ni imasu.)

Japanese has no verb "to be". the explanation here is simply too long. go here: http://www.guidetojapanese.org/learn/

The most common verb(well it is not really verb, it's a copula) is desu (です). です is used to for more polite speech. Often です is translated to am, are, or is in English. Example for marii desu (マリーです。）which is could be translated as "I am Mary.", or "This is Mary." depending on the context. Also, there is a less polite form of です, which is da (だ). Unlike です, だ can be completely dropped. Example for, genki(元気。) which can mean "I am well." You could also use genki da (元気だ。), but 元気 sounds more natural.

BE has a lot of translations in Japanese. Mainly, it's translated DESU, DA, DEARU, NARU, IRU, ARU, etc like other people already answered. When you want to introduce yourself with "I'm from Brazil", it means "buraziru susshin desu / burajiru jin desu" (I was born in Brazil / I'm Brazilian.) or "watashi wa burajiru kara kimashita" (I came from Brazil). You can use the last one when you aren't in your country. I hope this was helpful.