3. This wet ground is not f enough to walk on.

2. The bacteria were then examined under a m .

I. 根据下面各句句意以及所给单词的首字母或汉语提示词，写出该单词的正确形式(每空—词)。

1. Norm is very shy but his wife’s  o

[即学即练]用括号内动词的正确形式完成下面短文。

         People in many countries like to celebrate the carnival. Dancing and laughing can be heard in New Orleans,Rio de Janeiro;and most cities in Spain. The residents of these cities expect to spend months1. (practice) their routines in “samba”schools.

         In Rio de Janeiro,most of the citizens take a long time 2. (make) costumes and prepare floats(花车) for the carnival's many parades. Each float has a theme. The costumes are designed 3. (match) this theme,and original dances are arranged 4. (represent) this idea. It sounds like fun, but it's really hard work 5.  (organize) all of these efforts. Practicing takes up more time each day as the carnival approaches.

         In New Orleans,residents compete 6. (name) “king” of a float. Competition is fierce,and future kings are required 7.  (prove) that they have enough money to pay for the Crewe. Building the Crewe and designing and paying for costumes are all part of the king's job.

[自我归纳二]

动词不定式可在句子中充当主语、宾语、表语、补语、定语和状语。

★作主语，一般表示具体的某个动作，谓语动词用第三人称单数(句1);有时为了避免句子头重脚轻，常用it作形式主语，而把真正的主语不定式放在句尾(句2)。

★作宾语(句3) ;若带有宾语补足语时，常用it作形式宾语,而将真正的宾语不定式后置(句4) 。

★作，常用来说明主语的具体内容(句5) 。

[自我归纳一]

1. 不定式的形式及含义

不定式的完成式表示的动作发生在谓语所表示的 动作之前。

2. 不定式的否定形式通常是在不定式符号to前加(句7)。

5.She pictures of her favorite movie stars and puts them on her bedroom walls.

4.Linda the bad parts and uses the apples for cooking.

3.The doctor advised him to his working hours.

2. I've been advised to sugar of my diet.