baby［E］/n. 嬰兒；寶寶；-adj. 嬰兒的；幼小的：She held her baby in her arms. 她把嬰兒抱在手臂裏。/Be silent. The baby is asleep. 安靜，寶寶睡著了。/She bought some baby food for the baby. 她給寶寶買了一些嬰兒食品。/There is a baby tiger in the zoo. 動物園有一隻幼虎。
back［E］/adv. 向後；回；回去；以前；-n. ［C］背（部、麵）；後麵；後部；靠背；-adj. 後的；-v. 把…退出；支持：George looked back to see who was calling him. 喬治向後看誰在叫他。/I will drive back home. 我將開車回家。/They are going to take the bus back on Saturday. 他們打算周六乘公交車回去。/I met him four months back. 我四個月以前見過他。/He carried a bag on his back. 他背上背了個包。/She only saw the back of the man. 她隻看到那個人的背麵。/There is a garden at the back of the house. 房子的後麵有一個花園。/He put his arm on the back of the sofa. 他把手臂放在沙發的靠背上。/The back door of their house was open. 他們家的後門開著。/Please back your car out of the driveway. 請把你的車退出車道。/Don't worry. I will back your plan. 別擔心，我會支持你的計劃。
back and forth 來來回回
background /n. ［C］背景：Our education background often influences our future development. 我們的教育背景常常影響我們未來的發展。
bad［E］/badj. （worse /; worst /）不好的；壞的；嚴重的；糟的：This kind of food is bad for us. 這種食物對我們不好。/John is bad at math. 約翰數學不好。/She is kind and never says a bad word about anyone. 她很好，從不說任何人的一句壞話。/I have got a bad headache. 我得了嚴重的頭痛。/That's too bad. 那太糟了。/Bad weather often makes people feel bad. 壞天氣常常使人們心情糟糕。
bag［E］/n. ［C］袋；包：He put all his things in a paper bag. 他把他所有的東西放進一個紙袋。/Don't leave your bag in the office when you go for lunch. 你去吃午飯時不要把你的包放在辦公室裏。
ball［E］/bn. ［C］球；舞會：We play balls after class. 我們課後打球。/He saw a big ball of fire rise slowly. 他看見一隻大火球慢慢升起。/They attended a ball last night. 他們昨晚參加了一個舞會。
balloon /n. ［C］氣球：He dreamed to travel around the world in a hot air balloon. 他夢想乘坐熱氣球環遊世界。
bamboo /（bamboos） n. ［C］［U］竹（子）：Pandas like to eat bamboos. 熊貓喜歡吃竹子。/His father has a bamboo chair. 他父親有一把竹椅。
banana［E］/n. ［C］香蕉：I gave Mary an apple in exchange for a banana. 我用一個蘋果跟瑪麗換一根香蕉。
bank１ / n. ［C］銀行；庫：I have to go to the bank at lunch time. 我午飯時得去銀行。/There wasn't much blood left in the blood bank.血庫裏的血所剩不多。/We're going to set up a food bank to help hungry people. 我們打算建一個食品庫以幫助饑餓的人們。
bank２ /n. ［C］岸：He took a long walk on the river bank. 他在河岸上走了很久。
baseball/. ［C］［U］棒球：That school is famous for baseball. 那所學校以棒球聞名。
basic /adj. 基本的；基礎的：Many college students lack both basic skills and training. 許多大學生缺乏基本技能與訓練。/He is interested in basic research. 他對基礎研究感興趣。
basket /n. ［C］籃；筐；簍：He bought a basket of pears this morning. 今天早上他買了一籃梨子。/They took several baskets of fruit to the market. 他們把幾筐水果拿到市場上。/Throw the paper into the wastepaper basket. 把紙扔進廢紙簍。
basketball［E］/tbn. ［C］［U］籃球：We sometimes play basketball after school. 我們有時放學後打籃球。
bathroom /n. ［C］浴室；衛生間：There are three bathrooms in her house. 她家有3個浴室。/May I use your bathroom? 我可以用下衛生間嗎？
be1［E］/v. （am /，is /，are /，was /，were /，been /，being /）是；在（某處，某時）；成為；表現；等於：I am a student. 我是學生。/They are upstairs. 他們在樓上。/The birthday party was on Saturday afternoon. 生日聚會在周六下午。/She wants to be a nurse in the future. 她將來想當護士。/That boy is very polite. 那個男孩表現很禮貌。/ Three and three is six. 3加3等於6。
be2 /aux. v. （am /，was /were/，been/，being/）（be+Ving）正在；（be+Ved）被；是…的：She is reading in her room. 她正在她房間裏看書。/If we do _disibledevent=bicycle /） n. ［C］自行車；-v. 騎自行車：The bike cost me 200 yuan. 這輛自行車花了我200元。/She bikes to school every day. 她每天騎自行車上學。
bill /n. ［C］賬單；紙幣：He got a phone bill of 100 yuan this month. 這個月他收到一張100元的電話賬單。/Who usually pay bills in restaurants when boys and girls are out for dinner? 當男孩與女孩出去吃飯的時候，通常由誰付賬單？/We have two ten-dollar bills and we have to change them into coins. 我們有兩張10元紙幣，必須將它們換成硬幣。
bird［E］/n. ［C］鳥：More and more birds are in danger because they do not have enough living space. 越來越多的鳥處於危險之中，因為它們沒有足夠的生存空間。/You can have a bird's eye view of the city in this tower. 你可以在這座塔裏鳥瞰這座城市。
birth /n. ［ C］［U］出生；生育；誕生；出身：Your date of birth decides your star sign. 你的出生日期確定你的星宿。/ The world population will not rise so quickly if people use modern methods of birth control. 如果人們使用現代生育控製方法，世界人口不會增長很快。/The year of 1949 saw the birth of a new country. 一個新國家誕生於1949年。/She is French by birth. 她出身於一個法國家庭。
by birth 血統上；生來/give birth to 生；產生
birthday［E］/n. 生日：Happy birthday! 生日快樂！
biscuit /n. ［C］餅幹：He likes chocolate biscuits. 他喜歡巧克力餅幹。
bit /n. ［C］一點；有點；小片：We may need a bit of help. 我們可能需要一點幫助。/I feel a bit hungry. 我覺得有點餓。/The floor was covered with bits of broken glass. 地板上覆蓋了玻璃碎片。
black［E］/blk/ adj. 黑的；黑暗的；黑沉沉的；暗淡的；陰鬱的；黑人的；不加奶的；-n. ［U］［C］黑色；黑色（顏料）；黑人：She has long black hair. 她有長長的黑頭發。/That period was the blackest period of Chinese history. 那段時間是中國曆史最黑暗的一段時間。/The mountains looked black against the moon. 群山映襯著月色，看起來黑沉沉的。/Their future looked black. 他們的前途暗淡。/He was in a black mood. 他心情陰鬱。/The boy's father is black and his mother is white. 那男孩的爸爸是黑人，媽媽是白人。/Two black coffees，please. 請給我們兩杯不加奶的咖啡。/You look good in black. 你穿黑色好看。/Put some more black around your eyes. 在你眼周再多塗一點黑色。/The blacks are born equal with the whites. 黑人與白人一樣，生來平等。
blackboard［E］/n. ［C］黑板：The teacher wrote the rules onto the blackboard and the students copied them into their notebooks. 老師把規則寫在黑板上，學生將它們抄到筆記本上。
blind /adj. 失明的；盲的；-n. ［C］盲人們：He is blind from birth. 他天生失明。/Braille，invented by a Frenchman，is a language for blind people. 盲文是一個法國人發明的，是盲人用的語言。/The blind can read Braille with their fingers. 盲人們可以用手指讀盲文。
block /blk/ n. ［C］塊；（兒童玩的）積木；街區；樓；堵物； -v. 堵塞：Most traditional toys，like building blocks，were made of wood. 許多傳統玩具，像積木塊，是用木頭做的。/They built the hotel with large blocks of ice. 他們用大塊冰造起了那座旅館。/Walk about three blocks and you will find the supermarket. 走大約三個街區，你就會看到那家超市。/They live in a block of flats. 他們住在一棟公寓樓裏。/There was a block in the pipe and the water couldn't flow away. 管子裏有堵物，水流不出去。/The snow blocked the traffic. 大雪堵塞了交通。
blood /n. ［U］血；血液；血統；血緣：If a person loses a lot of blood，he will become ill and may die. 如果一個人失去很多血，他會生病甚至會死亡。/Many people go to the blood centers to give blood to blood banks. 許多人到血液中心給血庫獻血。/He has Chinese blood on his father's side. 他遺傳了他父親這邊的中國血統。/How many blood relatives do you have? 你有多少血緣親戚？