英语 必修4 unit1 导学案(5)

worthwhile的两个固定句型：

be worthwhile doing / to do; It is worthwhile to do sth.做……是值得的

eg. a worthwhile experiment/job.

The experiment is worthwhile.

It didn t seem worthwhile writing it all out again.

It might be worthwhile to reconsider your attitude to the new policy.

比较： be (well) worth (doing) sth.

be worthy of being done / sth

be worthy to be done…

eg. The book is _________________ reading the book. = It is worthwhile to read the book.

= The book is

in the tree 指树本身以外的事物或人附着在树上, 如鸟等动物；

on the tree 指树本身生长出来的东西, 如果实, 花等。 (1) spend

你暑假怎么打发? How will __________________________?

他把钱都花光了。He has spent all his money.

1) spend sth (on sth)/ (in) doing sth用(钱);花(钱)

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

2) 花费 spend sb spend … 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

eg. He _____ about a third of his salary in drinking.

She ____ 3000 dollars for the dress.

The DVD ____ her 150 yuan.

It ____ him ten days to finished the work.

(2) observe (n. observation) vi.&vt. to notice/ watch carefully 观察，注意到。

observe + n./pron./sb. doing/do sth/that-cl

eg. The scientist has observed the stars all his life.

I observed a stranger go/going into the office.

Though having lived abroad for years, many Chinese still ____ the traditional customs.

A. perform B. possess C. observe D. support

her project. 在她母亲头几个月来帮忙后，她才得以开始自己的计划。

将only及其后面的状语提前放在句首,句子要用部分倒装语序，即将be动词、助动词或情态

动词放在主语之前。

(1) only+状语“+部分倒装

只有这样，我们才能学好英语。 Only in this way_______________________.

到那时我才意识到我的错误。 Only then _______________________.

(2) 但Only +主语时不倒装

只有你了解我。Only you _______________.

1). 只有当你明白我的意思了, 你才能认识到你的错误。

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