前三句都是考察否定詞前置時(shí),謂語(yǔ)動(dòng)詞的倒裝問(wèn)題.
1.正常語(yǔ)序?yàn)椋篒t did not stop raining until yesterday afternoon.以Not until 開頭時(shí),助動(dòng)詞did 要提到主語(yǔ)it 之前,句子變?yōu)椋篘ot until yesterday afternoon did it stop raining.
2.正常語(yǔ)序?yàn)椋篐e not only made a promise but also kept it.以Not until 開頭時(shí),不是謂語(yǔ)動(dòng)詞made直接提前,而是將助動(dòng)詞did 放在主語(yǔ)he 之前,實(shí)體動(dòng)詞（原型）make 仍在主語(yǔ)后面,句子變?yōu)椋篘ot only did he make a promise but also (he應(yīng)該省略) kept it.
3.道理是一樣的,你可以自己分析一下.
4.原句是：I have many friends ,some of them(指代many friends) are bussinessmen.后一句變?yōu)槎ㄕZ(yǔ)從句來(lái)修飾many friends,修飾人的定語(yǔ)從句用who,whom引導(dǎo),這句形式為of whom(不能用who,of 后面要跟賓格,如要說(shuō)some of us,而不能說(shuō)some of we) .
5.從后面的句子意思可以分析出,問(wèn)句是問(wèn)200塊夠嗎?完整的句子是Will ￥200 be enough?用省略句的話,就用do代替be enough很感謝你的細(xì)心回答，最后一個(gè)問(wèn)題你說(shuō)用do代替be enough我想問(wèn)一下是不是be動(dòng)詞后加adv都可以用do代替一、這里enough 是形容詞。二、不是所有的情況都能這樣用，在這一句型里，do 其實(shí)是代替了￥200 will be enough to pay for/buy sth. 中的be enough to pay for/buy sth.，這中間含有支付/買這一動(dòng)作，所以可用do來(lái)代替，省得說(shuō)很長(zhǎng)的句子。這是一種比較固定的口語(yǔ)說(shuō)法。三、單就這一題來(lái)說(shuō)，其他的選項(xiàng)都不搭。