有一个美好的一天
or Yǒu yīgè měihǎo de yītiān
我很快乐
happy in Chinese is pronounced as Kai xin.
happy monthsary
'Gao xing' is 'happy' in Chinese.
happy monthsary
Althougth I can't remember the exact translation, You say it (Gaung hey faut choy) which is what you say when you want to say Happy Chinese New Years in Cantonese, im Mandarin can't remember exactly, but it sounds almost alike, people who speak it would know what you mean too.
Nihao
快乐 - (kuàilè) - Happy
You can say "我说中文不好" (wǒ shuō zhōngwén bù hǎo) which means "I am bad at speaking Chinese".
You can say "我是个笨蛋" (wǒ shì gè bèn dàn) to mean "I'm an idiot" in Chinese.
i have no idea how to say it because im not in china or speek Chinese
You can say "我不是" (wǒ bú shì) in Chinese to mean "I'm not."
Go on google translate.