Ⅰ. Write down the words after the model.
The frog is smiling.

4.
5.
6.
7.

1. making 2. swimming 3. lying 4. changing 5. jumping 6. hiding 7. using

【分析】
本题要求仿照例子将动词变为现在分词，需掌握动词现在分词的4种核心变化规则：①一般情况直接在词尾加-ing；②以不发音的字母e结尾的动词，先去e再加-ing；③以重读闭音节结尾且末尾只有一个辅音字母的动词，双写该辅音字母后加-ing；④特殊动词lie的现在分词为lying。根据每个动词的特征，运用对应规则变形即可。
【解析】
1. make是以不发音的e结尾，先去掉e再加-ing，得到making；
2. swim是重读闭音节，末尾只有一个辅音字母m，双写m后加-ing，得到swimming；
3. lie是特殊变化，现在分词为lying；
4. change是以不发音的e结尾，先去掉e再加-ing，得到changing；
5. jump是一般情况，直接在词尾加-ing，得到jumping；
6. hide是以不发音的e结尾，先去掉e再加-ing，得到hiding；
7. use是以不发音的e结尾，先去掉e再加-ing，得到using。
【答案】
1. making 2. swimming 3. lying 4. changing 5. jumping 6. hiding 7. using
【知识点】
动词现在分词构成；英语基础语法
【点评】
本题考察动词现在分词的变形，是英语学习中的基础题型，需牢记不同的变化规则，整体难度适中。
【难度系数】
0.6

Ⅱ. Complete the sentences with the correct form of the words in Exercise Ⅰ.
Model: I am studying frogs for Animal Week at school these days.
My Research on Frogs
Day 1 1. Look! A lot of frog eggs in the pond.
Day 2 2. Frogs in water with their webbed feet now.
Day 3 3. At this time, one frog on leaves with its strong legs.
Day 4 4. Be quiet! They their tongues to get their food.
Day 5 5. Where are the frogs? Oh, they under the leaves.
Day 6 6. I can't believe it! The frog its colour!
Day 7 7. I a video about frogs right now.

1. are lying 2. are swimming 3. is jumping 4. are using 5. are hiding 6. is changing 7. am making

【分析】
要完成这些句子，首先观察每个句子的时间标志词（如look、now、at this time、be quiet、right now），判断句子需使用现在进行时；现在进行时的结构为“am/is/are + 动词现在分词”，需根据主语的单复数确定be动词的形式，再将对应动词变为现在分词，结合语境填写正确形式即可。
【解析】
1. 主语“a lot of frog eggs”是复数，时间标志“Look!”表现在，be动词用are，lie的现在分词是lying，故填are lying；
2. 主语“Frogs”是复数，时间标志“now”，be动词用are，swim的现在分词是swimming，故填are swimming；
3. 主语“one frog”是单数，时间标志“At this time”，be动词用is，jump的现在分词是jumping，故填is jumping；
4. 主语“They”是复数，时间标志“Be quiet!”表现在，be动词用are，use的现在分词是using，故填are using；
5. 主语“they”是复数，语境表现在，be动词用are，hide的现在分词是hiding，故填are hiding；
6. 主语“The frog”是单数，语境表现在，be动词用is，change的现在分词是changing，故填is changing；
7. 主语是I，时间标志“right now”，be动词用am，make的现在分词是making，故填am making。
【答案】
1. are lying 2. are swimming 3. is jumping 4. are using 5. are hiding 6. is changing 7. am making
【知识点】
现在进行时构成；现在进行时用法
【点评】
本题以青蛙成长场景为语境，考查现在进行时的实际运用，需准确识别时间标志词和主语单复数，是基础语法的典型练习题，有助于巩固现在进行时知识点。
【难度系数】
0.6

Ⅲ. Complete the passage with the correct form of the words given.
I 1. (watch) Animal World on TV now. These animals are quokkas and they knock around in Western Australia.
They 2. (look) cute because of their smiley faces. But in fact, quokkas aren't smiling for real. With their round
faces and curved (弧形的) mouths, they always look like they 3. (smile). No wonder they are called the happiest animals in the world!
Look! One quokka 4. (eat) leaves and the other two 5. (drink) water. Do you know quokkas have two stomachs(胃)? One is to break down food and the other is to digest(消化) food.
Quokkas have bags like kangaroos. The mama quokka often carries her baby in her bag and 6. (feed) it with leaves.
Look! Those quokkas 7. (sit) down with their heads resting on their feet. What are they doing? Oh, they 8. (sleep)! They sleep a lot during the day. What amazing animals!

1. am watching 2. look 3. are smiling 4. is eating 5. are drinking 6. feeds 7. are sitting 8. are sleeping

【分析】首先观察每个句子的时间状语或语境提示，判断所需时态：1. 句中now是现在进行时的标志；2. 句描述客观事实，用一般现在时；3. 结合语境体现当前状态，用现在进行时；4、7句首的Look!是现在进行时的典型标志；5句主语为复数；6句主语是单数第三人称，需用一般现在时的动词形式；8句对应现在进行时的问句，需用现在进行时。再结合主语的单复数确定be动词或动词形式。
【解析】1. 根据now可知用现在进行时，结构为am/is/are + 现在分词，主语是I，故填am watching；2. 描述客观事实，用一般现在时，主语they是复数，动词用原形，故填look；3. 结合语境体现“正在微笑”的状态，用现在进行时，主语they是复数，故填are smiling；4. 由Look!可知用现在进行时，主语one quokka是单数，故填is eating；5. 主语the other two是复数，用现在进行时，故填are drinking；6. 主语mama quokka是单数第三人称，一般现在时中动词用第三人称单数形式，feed的三单是feeds，故填feeds；7. 由Look!可知用现在进行时，主语Those quokkas是复数，故填are sitting；8. 对应问句用现在进行时，主语they是复数，故填are sleeping。
【答案】1. am watching 2. look 3. are smiling 4. is eating 5. are drinking 6. feeds 7. are sitting 8. are sleeping
【知识点】一般现在时、现在进行时、动词第三人称单数
【点评】本题考查初中英语核心时态（一般现在时、现在进行时）的应用，需准确识别时态标志、主语单复数，是基础时态的典型题型，侧重时态的实际运用能力。
【难度系数】0.3