（心血整理，转载请注明出处）

When I was a child, I hoped to live in the city. I think I would be happy there. Now I am living in a city, but I miss my home in countryside. There the air is clean or the mountains are green. Unfortunately, on the development of industrialization, the environment has been polluted. Lots of studies havebeen shown that global warming has already become a very seriously problem. Theairs we breathe in is getting dirtier and dirtier. Much rare animals are dying out. We must foundways to protect your environment. If we fail to do so, we’ll live to regret it.

1． When I was a child, I hoped to live in the city.

When引导的时间状语从句，主过从过；

Hope后接不定式是可以的，hope后不能接复合结构。Wish可以。

  2．I think I would be happy there.

  前文是用的过去时态，所以think也要用过去时态thought

  3. Now I am living in a city, but I miss my home in countryside.

  单数名词之前需要用不定冠词表泛指，定冠词the表特指。

  单数可数名词不能单独存在，前面需要用冠词。复数名词表泛指时，前可以不用冠词。专有名词和不可数名词之前，也可以不用冠词。

4．There the air is clean or the mountains are green.

 Or 表选择，不表并列意思。并列用and

5. on the development of industrialization, the environment has been polluted.

  表伴随用介词with，非谓语-独立结构

6. Lots of studies have been shown that global warming has already become a very seriouslyproblem.

  1）主动 2）that 可省略 3）修饰名词的是形容词而不是副词

  4）very的词性是 1> adj 2>adv 在这里是adv

在以下情况下，that不能省略。

1． Everybody could see what happened and that Tom was frightened.(and连接两个宾语从句，that宾语从句放在and的后面时，that不能省略。)

2．I know nothing about him except that he is from the south.(that引导的宾语从句作介词宾语时，that不能省略。)

3．That he ever said such a thing I simply don’t believe. (that从句位于句首时，that不可省略。)

4． We decided, in view of his special circumstances, that we would admit him for a probationaryperiod. (主句谓语动词与that从句之间有插入语，that不可省略。)

7. The airs we breathe in is getting dirtier and dirtier.

  1）物质名词一般用单数形式。除非是表不同的种类，但是空气只有一种，所以需要用单数形式。

  2）that 在此省略了

  3）比较级的用法： adj-er and adj-er

8. Much rare animals are dying out.

Much 的词性是adv,adj,pron, Many 的词性是adj,pron

在这里是adj,修饰可数名词用many,不用much

9. We must found ways to protect your environment.

  1）情态动词must 之后的动词用原形。

  2）不定式表目的

  3）形容词性物主代词的考察，结合上下文意思。

10．If we fail to do so, we’ll live to regret it.

  1） 条件从句，时间从句的知识点—在表示的动作发生在将来时，时态为主将从现。

  2）regret可作vt,也可作vi. 所以，这一句没有错误的地方。