Ⅰ. Write down the words after the model.
paint — painted
— painted
cut—cut—cut
worry — worried
— worried
tell—told—told
change—
learn—
stay—
put—
read—
set—

cry—
study—
wear—
sit—
teach—

change—changed—changed, learn—learned—learned (learn—learnt—learnt), stay—stayed—stayed, put—put—put, read—read—read, set—set—set, try—tried—tried, cry—cried—cried, study—studied—studied, wear—wore—worn, sit—sat—sat, teach—taught—taught

【分析】
这道题考查英语动词的过去式和过去分词的形式，解题思路是：先观察示例中动词的变化规律，规则动词通常在词尾加-ed（以“辅音字母+y”结尾的规则动词需变y为i再加-ed），不规则动词的过去式和过去分词需特殊记忆，部分不规则动词三者同形，部分为特殊变化。解题时根据每个动词的类型，写出对应的过去式和过去分词，按照“原形—过去式—过去分词”的格式填写。
【解析】
逐个分析动词的变化：
1. change：规则动词，过去式和过去分词加-ed，即changed；
2. learn：规则变化为learned（也可作不规则learnt，此处按常见形式填写）；
3. stay：规则动词，过去式和过去分词加-ed，即stayed；
4. put：不规则动词，原形、过去式、过去分词同形，即put；
5. read：不规则动词，原形、过去式、过去分词同形（读音不同），即read；
6. set：不规则动词，原形、过去式、过去分词同形，即set；
7. try：规则动词，以“辅音字母+y”结尾，变y为i加-ed，即tried；
8. cry：规则动词，以“辅音字母+y”结尾，变y为i加-ed，即cried；
9. study：规则动词，以“辅音字母+y”结尾，变y为i加-ed，即studied；
10. wear：不规则动词，过去式为wore，过去分词为worn；
11. sit：不规则动词，过去式和过去分词为sat；
12. teach：不规则动词，过去式和过去分词为taught；
【答案】
change—changed—changed, learn—learned—learned, stay—stayed—stayed, put—put—put, read—read—read, set—set—set, try—tried—tried, cry—cried—cried, study—studied—studied, wear—wore—worn, sit—sat—sat, teach—taught—taught
【知识点】
动词过去式、动词过去分词、规则动词变化
【点评】
本题考查常见英语动词的过去式和过去分词的掌握，需区分规则与不规则变化，是英语基础语法的重要内容，需准确记忆不同动词的变化形式。
【难度系数】
0.3

Ⅱ. Complete the sentences with the correct form of the words in Exercise I.
1. I already my favourite dress three times this week. (wear)
2. She just a beautiful picture for her mom. (paint)
3. you ever a novel in one day? (read)
4. He never his phone number to strangers. (tell)
5. They in the same café every weekend for years. (sit)
6. We already the meeting schedule twice. (change)
7. The teacher us to stay calm before exams. (teach)
8. you to solve this maths problem by yourself yet? (try)
9. My sister never about her grades because she works hard. (worry)
10. My brother his finger twice this month! (cut)

1. have... worn 2. has... painted 3. Have... read 4. has... told
5. have sat 6. have... changed 7. has taught 8. Have... tried
9. has... worried 10. has cut

【分析】本题考查现在完成时的用法，解题思路为：1. 先识别句中标志词（如already、just、ever、never、yet、for+时间段、twice等），确定需使用现在完成时；2. 明确现在完成时的结构：肯定句为“主语+have/has+动词过去分词”，疑问句为“Have/Has+主语+动词过去分词”；3. 根据主语的人称和数确定助动词（第一/二人称、复数主语用have，第三人称单数主语用has）；4. 准确写出所给动词的过去分词形式，完成填空。
【解析】1. 主语为I，标志词already，用现在完成时，助动词用have，wear的过去分词为worn，故填have...worn；2. 主语为第三人称单数She，标志词just，助动词用has，paint的过去分词为painted，故填has...painted；3. 疑问句，主语为you，标志词ever，助动词用Have，read的过去分词为read，故填Have...read；4. 主语为第三人称单数He，标志词never，助动词用has，tell的过去分词为told，故填has...told；5. 主语为复数They，标志词for years，助动词用have，sit的过去分词为sat，故填have sat；6. 主语为复数We，标志词already，助动词用have，change的过去分词为changed，故填have...changed；7. 主语为第三人称单数The teacher，teach的过去分词为taught，助动词用has，故填has taught；8. 疑问句，主语为you，标志词yet，助动词用Have，try的过去分词为tried，故填Have...tried；9. 主语为第三人称单数My sister，标志词never，助动词用has，worry的过去分词为worried，故填has...worried；10. 主语为第三人称单数My brother，标志词twice，cut的过去分词为cut，助动词用has，故填has cut。
【答案】1. have... worn 2. has... painted 3. Have... read 4. has... told 5. have sat 6. have... changed 7. has taught 8. Have... tried 9. has... worried 10. has cut
【知识点】现在完成时、动词过去分词
【点评】本题为现在完成时的基础巩固题，重点考查时态结构、助动词选择及不规则动词过去分词的掌握，需准确识别时态标志词，整体难度较低，适合夯实基础。
【难度系数】0.3

Ⅲ. Complete the passage with the correct form of the verbs in brackets.
Since joining the art club last month, I 1. (learn) a lot about self-expression. At first, I 2. never (paint) anything because I was too shy. My friend Lily noticed this and said. “Why not try something new?” So last week, I finally 3. (try) to create a self-portrait.
While working on it, I 4. (cut) my hair short to match the drawing. Surprisingly, no one 5. (worry) about my new look; instead, they praised my courage. Yesterday, I 6. (put) the finished painting on the classroom wall. My classmates 7. already (tell) me how much they love it!
Through this experience, I 8. (change) my view of myself. I used to think I wasn't creative, but now I 9. (study) different art styles and even 10. (read) books about famous artists. Art has taught me that being unique is beautiful.

1. have learned 2. had... painted 3. tried 4. cut 5. worried 6. put
7. have... told 8. have changed 9. have studied 10. have read

【分析】
做这类动词形式填空题，需结合时间标志词、上下文语境判断时态，再对应动词的正确形式：
1. 由since+过去时间（last month）引导的从句，主句用现在完成时；
2. “At first”体现是过去的过去发生的动作，用过去完成时；
3. “last week”是明确的过去时间，用一般过去时；
4. while引导的过去动作，动词用过去式；
5. 描述过去发生的动作，用一般过去时；
6. “yesterday”是过去时间，用一般过去时；
7. “already”是现在完成时的标志，主语为复数，用现在完成时；
8. “Through this experience”体现从过去到现在的影响，用现在完成时；
9. “now”结合语境，是从过去到现在的动作，用现在完成时；
10. 与前面的study并列，用现在完成时。
【解析】
1. 时间状语“since joining the art club last month”，主句用现在完成时，主语I，故填have learned；
2. “At first”表示在过去动作之前的状态，用过去完成时，结构为had+过去分词，故填had... painted；
3. “last week”是过去时间状语，用一般过去时，try的过去式为tried，故填tried；
4. 描述过去发生的动作，cut的过去式仍为cut，故填cut；
5. 描述过去发生的动作，用一般过去时，worry的过去式为worried，故填worried；
6. “yesterday”是过去时间状语，用一般过去时，put的过去式为put，故填put；
7. “already”是现在完成时的标志，主语classmates为复数，故填have... told；
8. “Through this experience”体现从过去到现在的变化，用现在完成时，故填have changed；
9. 结合语境“now”，表示从过去到现在的学习动作，用现在完成时，故填have studied；
10. 与前面的study并列，用现在完成时，read的过去分词为read，故填have read。
【答案】
1. have learned 2. had... painted 3. tried 4. cut 5. worried 6. put 7. have... told 8. have changed 9. have studied 10. have read
【知识点】
动词时态（现在完成时、过去完成时、一般过去时）
【点评】
本题考查英语中不同时态在语境中的实际运用，需学生结合时间标志和上下文逻辑判断动词形式，是初中英语时态的基础练习题，注重对时态概念的理解和应用。
【难度系数】
0.3