1.block v.阻礙(hinder)；堵塞(obstruct)；n．街區(street)

例:No country should block any of its markets to foreign trade.//We know all the neighbors on our block.

派生詞：blockade( n./v.封鎖)：blockage(n.封鎖，妨礙)

2.blot n.墨跡，污跡(spot);v.模糊，遮暗(to make obscure)

例:It sends up a global pall of dust that blots out the Sun.

派生詞：blotter(n.吸墨紙)

3.bluegrass n.藍草音樂(from the Blue Grass Boys, performing group)；莓系屬的牧草，早熟禾屬植物(any of several grasses of which some have bluish-green culms)

聯想記憶：blue(藍色)+grass(草)一有藍色草的地方的音樂風格-藍草音樂

例:Bluegrass musician Bill Monroe's repertory, views on musical collaboration, and vocal style were influential on generations of bluegrass artists.

4. bluntly ad.坦率地，率直地(directly)

詞根記憶：來自blunt(a．坦誠的，直率的)

例:Many bluntly admitted that they thought Jane Eyre was a masterpiece.

5.boarder n.寄膳者：寄宿生(one that is provided with regular meals and lodging)

詞根記憶：自board(n.膳食;v.寄宿)

例:Foul play was suspected but never confirmed in the death of the boarderin 1985.

6.boaardinghouse n.寄宿公寓(house providing meals and accomodation)

例:Boardinghouses were built to accommodaie the lssei.