「明日バイトだー、不安だなー」＝ I've got work tomorrow. Feeling nervous... / Work tomorrow. Not looking forward to it. / Not looking forward to work tomorrow / Feeling nervous about work tomorrow....
ボキャブラリー
バイト ＝ work
明日 ＝ tomorrow
不安 ＝ feeling nervous / feeling apprehensive / not looking forward to it
イギリス 
