undertake的過去式和用法例句

　　undertake做動(dòng)詞有承擔(dān);從事;保證;答應(yīng)等意思，那么你知道undertake的過去式是什么嗎?下面學(xué)習(xí)啦小編為大家?guī)韚ndertake的過去式和用法例句，希望對(duì)大家的學(xué)習(xí)有所幫助!

　　undertake的過去式和其他時(shí)態(tài)：

　　過去式: undertook

　　過去分詞: undertaken

　　現(xiàn)在分詞: undertaking

　　undertake的用法：

　　undertake的用法1：undertake的意思是“擔(dān)任,承攬”,指將某事攬入自己的職權(quán)范圍內(nèi)或就任某一職務(wù)。undertake還可指“開始著手進(jìn)行某件事”。

　　undertake的用法2：undertake多用作及物動(dòng)詞,后接名詞、動(dòng)詞不定式或that從句作賓語?？捎糜诒粍?dòng)結(jié)構(gòu)。

　　undertake的用法3：undertake的過去式是undertook,過去分詞是undertaken。

　　undertake的過去式例句：

　　1. She was secretly vetted before she ever undertook any work for me.

　　她在為我工作以前曾受到過秘密考查。

　　2. He undertook to edit the text himself.

　　他答應(yīng)親自編輯正文的內(nèi)容。

　　3. The lawyer undertook the case.

　　該律師承辦這個(gè)案子.

　　4. He undertook the leadership of the team.

　　他擔(dān)任了這個(gè)團(tuán)隊(duì)的領(lǐng)導(dǎo).

　　5. Next he undertook to pay off the debts.

　　然后,他負(fù)責(zé)償還債務(wù).

　　6. She undertook to revise my compositions.

　　她著手批改我的作文.

　　7. He undertook to be here at five.

　　他答應(yīng)五點(diǎn)鐘到這里來.

　　8. The lawyer undertook the case without a fee.

　　這律師免費(fèi)承辦那個(gè)案件.

　　9. Peter Cooke undertook to send each of us a sample contract for perusal.

　　彼得·庫克答應(yīng)給我們每人寄送一份合同樣本供閱讀。

　　10. He also undertook to earmark $ 235 billion in government expenditure on infrastructure projects within five years.

　　同時(shí)承諾在五年內(nèi)投資二千三百五十億元進(jìn)行基建.

　　11. The space shuttle undertook a topsecret mission with a military payload under Pentagon control.

　　航天飛機(jī)執(zhí)行一項(xiàng)絕密使命,使軍用酬載由五角大樓控制.

　　12. We undertook the task of hacking our way through the jungle.

　　我們負(fù)責(zé)在叢林中開路。

　　13. She undertook the arduous task of monitoring the elections.

　　她承擔(dān)了監(jiān)督選舉的艱巨任務(wù)。

　　14. The committees undertook a comprehensive diagnosis of the city's problems.

　　該委員會(huì)負(fù)責(zé)對(duì)這個(gè)城市的問題作全面調(diào)查分析.

　　15. Then we undertook to improve our strains of rice.

　　然后我們就進(jìn)行稻種改革.