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

2. The bacteria were then examined under a m .

I. 根據(jù)下面各句句意以及所給單詞的首字母或漢語提示詞，寫出該單詞的正確形式(每空—詞)。

1. Norm is very shy but his wife’s  o

[即學(xué)即練]用括號(hào)內(nèi)動(dòng)詞的正確形式完成下面短文。

         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(花車) 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.

[自我歸納二]

動(dòng)詞不定式可在句子中充當(dāng)主語、賓語、表語、補(bǔ)語、定語和狀語。

★作主語，一般表示具體的某個(gè)動(dòng)作，謂語動(dòng)詞用第三人稱單數(shù)(句1);有時(shí)為了避免句子頭重腳輕，常用it作形式主語，而把真正的主語不定式放在句尾(句2)。

★作賓語(句3) ;若帶有賓語補(bǔ)足語時(shí)，常用it作形式賓語,而將真正的賓語不定式后置(句4) 。

★作，常用來說明主語的具體內(nèi)容(句5) 。

[自我歸納一]

1. 不定式的形式及含義

不定式的完成式表示的動(dòng)作發(fā)生在謂語所表示的 動(dòng)作之前。

2. 不定式的否定形式通常是在不定式符號(hào)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.