Let’s stop to have a rest.

Stop talking, please.

5. Crossing the River to School

cross是动词，“穿越，越过”，主要指“横穿”。

还可以作名词，意为“十字形，叉形符号”。

across既可以作介词，也可以作副词。

crossing 是名词，“渡口，交叉点”。

6. For many students,it is easy to get to school.

It is +adj.+to do sth. “做某事是.......”

7. There is a very big river between their school and the village.

between ...and...   “在....和...之间”，连接两个并列的成分。

between/among

(1) between 用于两者之间。

(2) among 用于三个或三个以上的人或物的“中间”。

8. But he is not afraid.

afraid: “害怕的，畏惧的”。

(1)be afraid of sth.   害怕某事/某物

(2)be afraid to do sth. 害怕做某事

(3)be afraid of doing sth. 唯恐做某事，指担心或担忧做某事会引起某种后果。

(4)be afraid + that从句，恐怕....

(5)为某件已经发生或可能发生的事表示歉意或者作出否定判断，相当于sorry.

9.  Many of the students and villagers never leave the village.

leave主要用法归纳如下:

1. 离开; 脱离

The train will leave at six tomorrow morning.

2. 把……留在; 留下

Leave the child at home. 把小孩留在家里。

3. 遗忘; 丢下

I left my notebook in the dormitory. 我把笔记本落在宿舍里了。

4. 使……处于(某种状态),后面常接宾语补足语

Leave the door open.

5. leave for+地点，“动身去某地”

He left for the station a few minutes ago.