bid這個詞有多種含義，它的詞源是古英語的biddan，意思是“命令，要求，祈求”。

• 作為動詞，表示“出價，投標(biāo)，叫牌，告別”等意思。它有兩種過去式和過去分詞形式：bid/bid用于表示“出價，投標(biāo)，叫牌”等意思，bade/bidden用于表示“告別，祈求，命令”等意思。例如：

• He bid $100 for the painting at the auction. 他在拍賣會上為那幅畫出價100美元。

• They bid for the contract to build the new bridge. 他們競標(biāo)建造新橋的合同。

• She bid four hearts and won the game. 她叫了四個紅心并贏得了游戲。

• He bade farewell to his family and left for the war. 他向家人告別，離開去打仗。

• She bade him to be quiet. 她命令他安靜下來。

• 作為名詞，表示“出價，投標(biāo)，叫牌，努力”等意思。它的復(fù)數(shù)形式是bids。例如：

• The highest bid for the painting was $500. 那幅畫的最高出價是500美元。

• They made a bid for the contract to build the new bridge. 他們?yōu)榻ㄔ煨聵虻暮贤M(jìn)行了投標(biāo)。

• She made a bid of four hearts and won the game. 她叫了四個紅心并贏得了游戲。

• He made a bid for freedom and escaped from prison. 他為自由而努力，并從監(jiān)獄中逃脫了。

• He _____ her good luck before the exam. (祝福)

• A. bade

• B. bid

• C. bidden

• D. bode

• Answer: A. bade

• Explanation: The past tense of 祝福 is bade, so choose A.

• She made a _____ for freedom and escaped from prison. (努力)

• A. a bid

• B. bid

• C. bade

• D. bidden

• Answer: A. a bid

• Explanation: The noun form of 努力 is a bid, so choose A.

• He _____ $50 for the vase but was outbid by another buyer. (出價)

• A. bade

• B. bid

• C. bidden

• D. bode

• Answer: B. bid

• Explanation: The past tense and past participle of 出價 are both bid, so choose B.

• She _____ him not to go with them. (祈求)

• A. bade

• B. bid

• C. bidden

• D. bode

• Answer: C. bidden

• Explanation: The past participle of 祈求 is bidden, so choose C.

• He _____ one spade and his partner raised to two spades. (叫牌)

• A. bade

• B. bid

• C. bidden

• D. bode

• Answer: B. bid

• Explanation: The past tense and past participle of 叫牌 are both bid, so choose B.