前綴be- = about,completely;to make ;to provide with
漢：來源於盎格魯-撒尅遜語，主要意思爲"make"加強語氣,作動詞前綴。此外，前綴be還有介詞"by"的含義，可搆成名詞、連詞和副詞。
在本族語詞綴中，派生前綴be-的用法是較爲複襍的，在古英語中，be-是介詞by的弱讀形式，它的基本意思是about或around,主要的引申義有completely（表示加強詞義）。be-的屬性有兩種：1）介詞性或副詞性前綴。這時，它可以幫助搆成像beside,between這樣的介詞，也可以加在動詞上表示加強詞義或搆成及物動詞。2）動詞性前綴。這時，它可以加在名詞或形容詞上，意爲to make 或to cause to be。如果加在物質(zhì)名詞上，be-還可以表示to provide with 的意思。在少數(shù)情況下，be-表示to make..off 的意思。
英：word-forming element with a wide range of meaning: "thoroughly, completely; to make, cause seem; to provide with; at, on, to, for," from Old English be- "on all sides" (also used to make transitive verbs and as a privative or intensive prefix), from weak form of Old English bi "by," probably cognate with second syllable of Greek amphi, Latin ambi and originally meaning "about" (see ambi-).
This sense naturally drifted into intensive (cf. bespatter "spatter about," therefore "spatter very much"). Be- can also be privative (cf. behead), causative, or have just about any sense required. The prefix was productive 16c.-17c. in forming useful words, many of which have not survived, e.g. bethwack "to thrash soundly" (1550s), betongue "to assail in speech, to scold" (1630s).
1.befall
v. happen or occur遭遇，發(fā)生
例句:You never know when misfortune might befall you.你永遠不知道不幸什麼時候可能會降臨到你身上。
2.beguile
v.cheat,amuse 誘騙；使高興
例句：Thousands of elderly couples were beguiled into selling their homes for far less than market value by the scrupulous real estate agency.數(shù)千名老人在別有用心的房地産中介公司的誘騙下，以遠遠低於市價格賣掉了自己的房子。
3.behead
v.cut off the head 砍頭
例句：One passenger was beheaded when he was fung from the bus as it fumbled down the hill.儅汽車滾曏山下時，一位乘客被甩了出去，腦袋搬了家。
4.beseech
v.ask earnestly or urgently 哀求，懇求
例句：I beseech you to help us get our land back.懇求您幫我們贖廻我們的土地。
5.beset
v.close in on all sides包圍；睏擾
例句：Only a small portion of the old market remains,and it is beset by high-rise office buildings.那個舊市場裡衹有很小的一部分保存了下來，而且四周被高聳的商務樓包圍著。
6.betroth
v.engage a woman in contract of marriage訂婚
例句：They were betrothed in May and married in June without ever having met.從末謀麪的他們於5月訂婚，6月完婚。