No, but it can also mean:
- "bad lot" (UK)
- "bad news"
"tu" is a pronoun that is always a direct subject:
- for example, you must say: "Tu es belle." for "You are beautiful" (You cannot say "Toi es belle").
"Toi" cannot be the direct subject of a verb, but it can strengthen the subject pronoun "tu".
- For example: "Toi, tu es très belle" (but not: "Toi es très belle").
"Toi" can also be used as a subject, but only if it comes with another pronoun.
- For example: "Toi et moi sommes beaux", for "You and I are beautiful".
In French, most adjectives are placed after the noun.
Certain adjectives are placed before the noun, some which you can memorize with the acronym "BANGS":
Beauty - Age - Numbers - Good and bad - Size (except for "grand" with people)
These descriptors - and a few others - are considered inherent qualities of the noun: For example "une jolie fille" for "a pretty girl"
Many words describing "qualities" flip the noun-adjective order. That holds for "bon/bonne" (good), but I can't tell you for how many other words.
E.g. (EDIT: note Remy's comment, and why these first two are wrong =P) Wrong: Il est un bon homme. Elle est ma plus chère amie. Not wrong: C'est une maison bleue. (Correctly: C'est un homme bon. C'est ma plus chère amie.)
The exception for 'bon', here, is for describing people, where that word would would mean, specifically, morally good, and not just good as/at/for something, so the word goes post-noun for distinction.
Wow, interesting - thanks for the correction. French grammar is so full of nuance. Also, just seeing as you're learning portuguese (and this applies to spanish, I think), you might like to know that it has similar allowance for variation in adjective order. It's often pretty loose, though, with very slight differences (like french - this is a romance lang. thing, I guess), and more common for certain words and situations, although there are general patterns. I was going to give examples, but there are too many and they're seldom strict. =/
bonjour ! can i ask a question? well, how do you differentiate when to use sentence like "une pomme noire" and "un mauvais garcon"..? i mean, sometimes there are adjective+noun and sometimes there are noun+adj.. sorry, i dont understand the explanations above .. could anyone please make it more simple but compact? wee merci beaucoup ! :)
"noire" is an adjective of color so it has to be placed after the noun (like most adjectives in French).
"mauvais" is an adjective that give information about something being "bad" (see my explanation above about "BANGS" adjectives), so it has to be placed before the noun.
There is no audible difference between "es" and "est". Knowing "tu" or "il"/"elle" etc... will let you know how to spell "es/est".
Hope that helps!