Ⅱ. 完成句子:用括号中所给单词的适当形式填空
1. The giraffe is the (tall) animal in the world.
2. Bamboo grows (fast) among all plants.
3. The African elephant is (heavy) land animal.
4. The Yellow River is the second (long) river in China.
5. Which flower is (beautiful), the rose, the jasmine, or the camellia?

1. tallest 2. fastest 3. the heaviest 4. longest 5. the most beautiful

1. 句中"in the world"表示范围，应用形容词最高级，tall的最高级为tallest。
2. 句中"among all plants"表示范围，应用副词最高级，fast的最高级为fastest。
3. 句中"land animal"前需用定冠词the，"非洲象是最重的陆地动物"，应用形容词最高级heaviest，前面加the。
4. "the second+形容词最高级"表示"第二最……"，long的最高级为longest。
5. 句中比较对象为三者，应用形容词最高级，beautiful的最高级为most beautiful，前面加the。

★★完成句子:根据汉语意思完成句子,每空限填一词
1. 猎豹是世界上最漂亮的动物之一,并且它跑得最快。
The cheetah is one of in the world, and it .
2. 哪种树是世界上最高的?
Which tree is in the world?
3. 在中国,熊猫是最受欢迎的动物。
In China, pandas are animals.
4. 在所有花朵之中,我最喜欢玫瑰花。
all flowers, I like roses .
5. 谁的脖子最长,天鹅,鸵鸟,还是长颈鹿?
Whose neck is , the swan, the ostrich or the giraffe?

1. the most beautiful animals; runs the fastest
2. kind of; the tallest
3. the most popular
4. Among; the best / (或填 best; most ）
5. the longest

1. 根据题意，“最...之一”用"one of the +最高级+名词复数"，所以前四个空填"the most beautiful animals"，"跑得最快"用"run the fastest"，主语是it，动词用第三人称单数形式"runs the fastest"。
2. “树”是"tree"，这里问的是种类，所以用"kind of"，"最高"用"the tallest"。
3. “最受欢迎的”用"the most popular"。
4. “在所有花朵之中”用"Among all flowers"，"最喜欢"用"like...best"。
5. “最长”用"the longest"。

★★★选词填空:用方框中所给词语的适当形式填空,每词仅用一次
long endangered clean large loud
The blue whale is the 1. animal on earth. It is even bigger than dinosaurs (恐龙). This amazing animal can grow as 2. as three school buses. It weighs more than 30 elephants. Its heart is the biggest of all animals. The heart is as big as a small car. Blue whales make the 3. sounds in the world. Their calls are louder than a jet plane. Sadly, they were once the 4. whales because of hunting. Now only about 25,000 are left. We must protect them and keep oceans safe and 5. .

1. largest
2. long
3. loudest
4. endangered
5. clean

1. “The blue whale is the 1. ______ animal on earth.” 根据常识可知蓝鲸是地球上最大的动物，方框中“large”符合，这里要用最高级形式“largest”。
2. “This amazing animal can grow as 2. ______ as three school buses.” 此处表达蓝鲸能长到和三辆校车一样长，“as long as”表示“和……一样长”，所以填“long”。
3. “Blue whales make the 3. ______ sounds in the world.” 根据“Their calls are louder than a jet plane.”可知蓝鲸发出世界上最大声的声音，要用“loud”的最高级“loudest”。
4. “Sadly, they were once the 4. ______ whales because of hunting.” 由于捕猎，它们曾经是濒危的鲸鱼，“endangered”表示“濒危的”，符合语境。
5. “We must protect them and keep oceans safe and 5. ______.” “keep + 宾语 + 形容词”表示“使……保持某种状态”，这里说使海洋保持安全和干净，“clean”符合。