undertake的过去分词

Undertake \Un`der*take"\, v. t. [imp. {Undertook}; p. p.
{Undertaken}; p. pr. & vb. n. {Undertaking}.] [Under + take.]
1. To take upon one's self; to engage in; to enter upon; to
take in hand; to begin to perform; to set about; to
attempt.

To second, or oppose, or undertake
The perilous attempt. --Milton.

2. Specifically, to take upon one's self solemnly or
expressly; to lay one's self under obligation, or to enter
into stipulations, to perform or to execute; to covenant;
to contract.

I 'll undertake to land them on our coast. --Shak.

3. Hence, to guarantee; to promise; to affirm.

And he was not right fat, I undertake. --Dryden.

And those two counties I will undertake
Your grace shall well and quietly enjoiy. --Shak.

I dare undertake they will not lose their labor.
--Woodward.

4. To assume, as a character. [Obs.] --Shak.

5. To engage with; to attack. [Obs.]

It is not fit your lordship should undertake every
companion that you give offense to. --Shak.

6. To have knowledge of; to hear. [Obs.] --Spenser.

7. To take or have the charge of. [Obs.] ``Who undertakes you
to your end.'' --Shak.

Keep well those that ye undertake. --Chaucer.