重点句型

1.It was my sister who first had the idea to cycle along the entire Mekong River from where it begins to where it ends.

首先想到沿湄公河从源头到终点骑车旅游的是我的姐姐。

用法归纳

where it begins 与where it ends是where引导的名词性从句。where既作引导词，又在名词性从句中作状语。

例句

（1）我们都知道2022年冬奥会在哪儿举行。

We all know where the 2022 Winter Olympics will be held.

（2）书在你原来放的地方。

The book is where you left it.

2.Although she didn't know the best way of getting to places,she insisted that she organize the trip properly.

虽然她把去某些地方的最佳路线并不清楚，她却坚持要自己把这次旅游安排得尽善尽美。

用法归纳

（1）当insist后接that从句表示“坚持要做……”时，要用虚拟语气（即谓语动词结构为should+动词原型，should可以省略）

（2）当insist后接that从句表示“坚持认为，坚持说”时，则从句不采用虚拟语气，而是要用陈述语气。

（3）insist on/upon doing sth.坚持做某事

例句

（1）她坚持要到机场为我们送行。

She insisted on seeing us off at the airport.

（2）英语老师坚持要我们在课堂内外都讲英语。

Our English teacher insists that we （should）speakEnglish in and out of class.

（3）那个年轻人坚持说他什么也没偷。

The young man insisted that he didn't steal anything.

3.Once she has made up her mind,nothing can change it.

她一旦下了决心，什么也不能使她改变。

用法归纳

once是从属连词，“一（旦）……就……”，连接一个表示时间的状语从句。

例句

（1）一旦印制，这本书一定会很流行。

Once it is printed ,the book will be very popular.

（2）你一旦答应，就应该去做。

Once you have promised,you must do it.

4.When I told her the air would be hard to breathe and it would be very cold, she said it would be an interesting experience.

当我告诉她那里空气稀薄，呼吸困难而且天气很冷时，她却说这将是一次有趣的经历。

用法归纳

the air would be hard to breathe是“sth.+be+adj.+to do”结构，其中to do 的逻辑宾语就是句子的主语。常用于此结构中的形容词有difficult,easy等

例句

（1）她为人幽默，容易相处。

She is humorous and easy to get along with.

（2）这把椅子坐上去很舒服。

The chair is comfortable to sit on.