九年级英语第十八单元Planting trees 植树

They travel in the forest once a year .

［点拨］forest 指占地广大，而人迹稀少，有鸟兽栖息的森林，而 wood 指树林，人工培植林，或已开发的林子。

13 . sand 沙；沙子；沙滩

A child likes to play with sand .

The children are playing games on the sands .

［点拨］sand 作“沙，沙子”讲是不可数名词，当“沙滩”讲是可数名词。

14 . copy 照搬；誊写；模仿 ( 动词 )

Copy the sentence down .

He copied a page of the book .

Copy this down in your notebook .

I want you to copy carefully from this model .

［点拨］Copy in the examination 考试作弊，Copy down 记下，抄下。

15 . northern 北方的；北部的 ( 形容词 )

The northern part of our country is very cold in winter .

［点拨］northern 无比较等极形式，类似的还有：southern 南方的，eastern 东方的，western 西方的。

16 . million 百万；百万个 ( 人或物 )

There are more than five million people in this city .

Millions of people went to the streets to welcome the king .

［点拨］million 前如有数词，million 则不加 s , 如加了s 后必接 of。

17 . toward ( s ) 向；朝；对于 ( 介词 )

A group of students are walking toward ( s ) she sea .

She was walking toward ( s ) town when I met her .

［点拨］在后跟人时，towards含有“态度性”。如：

Is he friendly towards her ?

What are his feelings towards us ?

18 . among 在……之中 ( 介词 )

She was sitting among her children .

I found him among the crowd .

There is a small house among the trees .

［点拨］among 表示三者或三者以上的之间。

19 . mountain 山；山脉

It is difficult to get to the top this mountain .

They are climbing the mountain .

The mountains were covered with snow .

［点拨］in ( the heart of ) mountains 在 ( 深 ) 山中，a mountain of difficulties 困难重重。

20 . grow

①种植；栽培 ( 及物动词 )

In early spring we grow trees around our house .

②生长，成长 ( 不及物动词 )

Plants cannot grow without water .

The rice is growing fine .

He has grown into a fine young man .

③发展，增长 ( 不及物动词 )

They city is growing fast .

The population is not growing so fast in this area .

［点拨］grow 的过去式，过去分词为 grew , grown . grow 还可作系动词用，后接形容词作表语，grow up 长大，成人。

单元词组思维运用

1 . neither…nor 既不……也不

He is neither Japanese nor Chinese .

Neither he nor I know that .

［注意］当它用来连接两个主语时，其谓语动词的形式取决于后一个主语的人称。试比较：

Neither you nor I am right .

Neither you nor he is right .

Neither he nor you are right .

2 . knock…into 把……插进；把……敲进

Knock a long , strong stick into the earth next to the hole .

A long stick must be knocked into the earth .

Knock the nail into the wall , please .

3 . make sure 务必；查明；弄确实

Make sure that it is straight .

Make sure that all the windows are closed .

Make sure you get there on time .

I think there is a train at 5 : 15 , but you\'d better make sure .

Have you made sure of the time of the train ?

4 . in a few years\' time 几年之后

In a few years\' time , we hope to cover those mountains , too !

［注意］in… \'s ( s\' ) time , 表示“在某时间之后”，又如：

She is going to Beijing in three days\' time .

I\'ll be back in a week\'s time .

He will be back in an hour\'s time .

He has promised to pay me in three months\' time .

5 . tie…to 把…捆在 ( 拴在 ) ……

He tied the horse to the tree .

They tied the bad to the big tree .

When he woke up , he found himself tied down to the ground .

6 . be just right 正合适，合适的。

The weather is just right for travelling .

This book is just right for reading .

7 . stop…from doing 制止……不使……；阻止

It will stop the

《九年级英语第十八单元Planting trees 植树(第2页)》