adj.壞的；不好的；差的；疼痛的；嚴(yán)重的；有害的；腐敗的；低劣的；不利的；不舒服的；不健康的
n.壞人；壞事
adv.非常；不好地
Smoking is bad for health. 吸煙對身體有害。
In the recession, our firm went through a bad time. 我們公司在經(jīng)濟(jì)衰退時期歷盡艱辛。
He's gone to bad since he made friends with those people. 他結(jié)交那些人后就開始墮落了。
Their travel plan was cancelled because of the bad weather. 因為天氣不好，他們的旅行計劃取消了。
His shabby appearance creates a bad impression. 他那寒酸的樣子給人留下不好的印象。
It's a very bad things:所有物；用具；情況" target="_blank">thing to leave things around. 把東西到處亂扔是很不好的習(xí)慣。
Bad eyesight is less common in this part. 這地區(qū)很少有視力差的人。
A bad workman quarrels with his tool. 手藝差的工人總是抱怨工具不好使。
I felt bad all day. 我整天覺得不舒服。
She's got a bad headache. 她頭痛得厲害。
Leaving his name off the list was a bad slip-up. 名單上沒有他的名字是個嚴(yán)重的疏忽。
It's bad to you to read in the sun. 在陽光下讀書是有害的。
Stagflation is bad for stock market valuations. 滯漲對股票價值是有害的。
In several passages he stressed that bad governments, especially corrupt or repressive ones, could not expect his help. 在幾頁文字中，奧巴馬強(qiáng)調(diào)，管理不善的政府，特別是腐敗的或是鎮(zhèn)壓性的政府是不可能獲得他的幫助的。
Pogroms, crusades, bad Popes, and crooked preachers on the Old Time Gospel hour have left a bad taste in many people's mouths. 大屠殺，十字軍東征，腐敗的天主教皇，和一些歪曲事實的布道者在舊時期給人們留下了太多的負(fù)面影響。
I thought it was a very bad article. 我以為那是一篇很低劣的文章。
They protested about the bad food. 他們對低劣的伙食提出了抗議。
The decadence of morals is bad for a nation. 道德的墮落對國家是不利的。
Your bad skin will tell against you if you want to be an actress. 如果你想當(dāng)演員的話，你粗糙的皮膚對你是不利的。
Bad breath, as well as being unpleasant, can be interpreted by would-be lovers as a sign of health problems. 口氣不清新或讓人不舒服會被對方視為身體
當(dāng)badly用來修飾want，need或require時，指“很”，原來只是在口語中出現(xiàn)，現(xiàn)在文字中也較普遍。 She needs a new coat badly.她很需要一件新的外套。
feel bad同feel badly都表示“身體或精神上感覺不好”，有時指“因和別人感同身受而感覺不好”。feel badly在字面義上還可指“觸覺不好”。
adj.(形容詞)bad的基本意思是“壞的,邪惡的,不道德的”,也可作“令人不快的,使人討厭的”“嚴(yán)重的; 顯著的”“有病的”“有害于某人的”“不適宜的; 困難的”等解。
bad在句中可用作定語或表語。
bad和feel, seem, look等詞連用,意為“不舒服”。
bad的比較級為worse,最高級為worst。
bad一般不用于否定句中,習(xí)語not bad的意思是“不錯”。
bad在美國俚語(主要是黑人用語)中可作“頂呱呱的”“挺時髦的”解，此時的比較級為badder，最高級為baddest。
n.(名詞)bad用作名詞意思是“壞的事物”,引申可表示“厄運(yùn)”。是不可數(shù)名詞。
