4) There are many differences _______ living in the city and living in the countryside.

2. It is a difficult task to undertake.

undertake vt.

观察示例:

1) We could undertake the work for the time being.

2) It's a matter of duty. That's why I'm prepared to undertake it.

3) He undertook to pay the money back in six months.

4) I can't undertake that you will make a profit.

【自我归纳】undertake是动词，意为：①___________（句1）；②承担，接受（句2）；③同意，答应（句3）；④保证（句4）。

【即学即练】翻译下面句子。

1) I will undertake that he has not heard a word.

_________________________________________

2) Who will undertake the responsibility for this work?

_________________________________________

3) Tom undertook to attend my birthday party, but he didn't show up.

_________________________________________

3. ..., Dolly's appearance raised a storm of objections...

object v. 不赞成, 反对 n. 物品, 目标

[派生词] objection n. 不赞成, 反对

[常用搭配] object to sth./doing sth. 反对(做)某事

object to sb. 反对某人

object that ... 反对......

have/take/make an objection to (doing) sth. 对......表示反对

raise an objection to (doing) sth. 对......提出异议

归纳拓展：

object 不及物动词时后接介词to或against; 及物动词时可接that引导的从句。

objection 与have, take, feel等连用构成词组：

have objection to

take objection to

feel objection to

句型转换。

1) Have you any objection to my opening the window?

= Would you ______ ______ my opening the window?

2) take objection to smoking.

= I ______ _______ smoking.

3) "But he is too young," she argued.

= She ________ that he was too young.

4. Although at present human egg cells and embryos needed for cloning research are difficult to obtain, ...

obtain vt.

观察示例:

Meanwhile you will obtain a lot of information. 同时你将获得大量的知识。

She obtained her doctor's degree in 1996. 她1996年获得博士学位。