1、be bad at 不善于。如：
I’m bad at maths. 我數(shù)學(xué)學(xué)得很差。
He is bad at playing tennis. 他網(wǎng)球打得不好。
2、be bad for 對(duì)……不好。如：
Too much salt can be bad for you. 吃太多的鹽對(duì)你不好。
Smoking is bad for you (your health). 抽煙對(duì)你(你的身體)有害。
3、go from bad to worse 變得越來越糟，每況愈下。如：
His business is going from bad to worse. 他的生意每況愈下。
We’re hoping for an improvement but things have gone from bad to worse. 我們希望有所改善，但情況卻變得越來越糟。
I’m bad at maths. 我數(shù)學(xué)學(xué)得很差。
He is bad at playing tennis. 他網(wǎng)球打得不好。
2、be bad for 對(duì)……不好。如：
Too much salt can be bad for you. 吃太多的鹽對(duì)你不好。
Smoking is bad for you (your health). 抽煙對(duì)你(你的身體)有害。
3、go from bad to worse 變得越來越糟，每況愈下。如：
His business is going from bad to worse. 他的生意每況愈下。
We’re hoping for an improvement but things have gone from bad to worse. 我們希望有所改善，但情況卻變得越來越糟。