be worthy to to be done

这本书很值得一读。

The book is _________= The book is worthy to be read.

【keys】.(well worthy of being read)

4.Jane spent many years observing and recording their daily activities.

简花了多年时间来观察和纪录黑猩猩的日常活动。

spend vt.用（钱）;花（钱）

你暑假怎么打发?How will _________ ?

【keys】 (you spend your summer holiday)?

他把钱都花光了。 He has spent all his money.

他将全部积蓄花在一辆新车上。He spent all his savings on a new car.

花费 spend　Sb.spend sth.(on sth.)/ (in) doing sth.

pay　　Sb.pay some money for sth.

cost　Sth.cost sb.some money

take　It takes sb....to do sth.

He _________ (spent)about a third of his salary in drinking.

She _________ (paid) 3000 dollars for the dress.

The DVD _________　(cost) her 150 yuan.

It _________ (took) him ten days to finish the work.

5.observe

(1)vi.&vt.to notice/ watch carefully 观察,注意到　

observe + n./pron.

observe sb.doing/do sth.

observe +that-clause

这位科学家一生都在观察星星。The scientist has observed the stars all his life.

我看到一个陌生人进了、正在进办公室。

I observed a stranger go/going into the office.

我注意到班上有几个学生睡着了。

I observed that several students were asleep in class.