一、用when, while或as填空。
It was a quiet afternoon. the sun shone through the trees, a small campfire was left burning. Suddenly, as the wind grew stronger, a spark flew onto some dry grass. the spark touched the grass, the fire started to grow. one group of people was hiking nearby, they noticed a strange smoke. the smoke rose higher, the sky turned gray.
another camper saw the flames, he shouted for help. As the fire spread quickly, the wind carried it from tree to tree. Some animals ran away, others hid in fear. the firefighters arrived, the fire was already huge. They worked hard the sun went down. the last flame was finally out, everyone felt relieved. the forest looked black and sad, they knew new trees would grow again one day.

1. As/When 2. As/When 3. While 4. As/When 5. As/When 6. while 7. As/When 8. as 9. As/When 10. While

【分析】首先明确when、while、as的用法区别：when可接短暂或延续性动作，主从句动作可同时或先后发生；while仅接延续性动作，从句常用进行时态，可表对比；as强调两个动作同时发生，或表“随着”。再结合每个空的语境（动作类型、逻辑关系）逐一判断：1. 两个延续动作（太阳照、篝火燃）同时，可选as/when；2. 短暂动作（火花碰）和延续动作（火变大），选as/when；3. 从句动作“徒步”是延续性，用while；4. 两个延续动作（烟升、天变灰），选as/when；5. 短暂动作（看到火焰）和延续动作（喊救命），选as/when；6. 对比两个延续动作，用while；7. 短暂动作（消防员到）和延续状态（火大），选as/when；8. 表“直到太阳下山”，用as；9. 短暂动作（火焰灭）和延续状态（放松），选as/when；10. 对比森林状态和想法，用while。
【解析】1. 此处两个动作同时进行，用as或when；2. 短暂动作与延续动作并存，用as或when；3. 从句动作是延续性的过去进行时，用while；4. 两个动作同步发生，用as或when；5. 短暂动作与延续动作并存，用as或when；6. 表对比两个并列的延续动作，用while；7. 短暂动作发生时另一动作已完成，用as或when；8. 表“直到”，用as；9. 短暂动作发生时另一状态出现，用as或when；10. 表对比两个情况，用while。
【答案】1. As/When 2. As/When 3. While 4. As/When 5. As/When 6. while 7. As/When 8. as 9. As/When 10. While
【知识点】时间状语从句，when/while/as用法
【点评】本题考查时间状语从句中三个连词的辨析，需掌握它们的用法差异并结合语境判断，属于基础语法题，难度适中。
【难度系数】0.5

二、用括号内所给动词的适当形式填空。
A
It was late last Friday morning. The sky was dark and cloudy. I (do) my homework at home alone when the wind (start) to blow strongly outside. The sound of the wind was very loud, and I could hear leaves falling everywhere. My cat (sleep) comfortably on the sofa while I (read) a book about natural disasters, which told us how to keep safe during storms. Suddenly, I (hear) a loud crash. A big tree in our yard (fall) down near our window, breaking some branches. I stood up quickly and looked out. The wind (blow) harder and harder, and the rain (beat) heavily against the windows. My parents weren't at home at that time. They (work) in their office, so I called them at once to tell them what happened. I felt a little afraid, but I remembered the tips from the book, closed the window tightly and stayed calm. What an unusual and scary experience it (be)!

1. was doing 2. started 3. was sleeping 4. was reading 5. heard 6. fell 7. was blowing 8. was beating 9. were working 10. was

【分析】
本题考查过去时态的运用，核心是区分when和while引导的时间状语从句的时态规则：when引导的时间状语从句中，动作是短暂性的，用一般过去时，主句动作是延续性的，用过去进行时；while引导的时间状语从句，主从句动作均为延续性，都用过去进行时。需先判断每个动作是短暂性还是延续性，再结合语境确定对应时态。
【解析】
1. 句意为“我正在家独自做作业，这时外面开始刮大风”，“做作业”是延续性动作，需用过去进行时，主语为I，故填was doing；
2. “开始刮大风”是短暂性动作，用一般过去时，故填started；
3. “猫在沙发睡觉”是延续性动作，由while引导，需用过去进行时，主语为单数名词cat，故填was sleeping；
4. “我在读书”是延续性动作，由while引导，需用过去进行时，主语为I，故填was reading；
5. “突然听到巨响”是短暂性动作，用一般过去时，故填heard；
6. “树倒下”是短暂性动作，用一般过去时，故填fell；
7. “风正越刮越大”是延续性动作，需用过去进行时，主语为单数名词wind，故填was blowing；
8. “雨正猛烈拍打窗户”是延续性动作，需用过去进行时，主语为单数名词rain，故填was beating；
9. “父母在办公室工作”是延续性动作，需用过去进行时，主语为复数名词parents，故填were working；
10. 句意为“这是多么不寻常可怕的经历”，描述过去的经历，主语为it，用一般过去时，故填was。
【答案】
1. was doing 2. started 3. was sleeping 4. was reading 5. heard 6. fell 7. was blowing 8. was beating 9. were working 10. was
【知识点】
过去进行时、一般过去时、when/while用法
【点评】
本题围绕过去发生的生活场景，考查初中英语核心时态的运用，以及when和while引导从句的时态搭配规则，是基础时态考点，需熟练掌握延续性与短暂性动词的时态区分。
【难度系数】
0.5

B
It was a beautiful spring day and the sun 1 (shine). Four boys decided not to go to school in the morning. They planned to play football, although they 2 (have) an English exam that day.
The boys 3 (play) football when it started to rain heavily. They 4 (think) the exam was probably over so they decided to go back to school. When they 5 (walk) in the hallway, their English teacher saw them. “Why did you miss the exam today? ” she asked. A boy answered her with a lie, “While we 6 (ride) bikes to school, our bikes all had a flat tyre and they couldn’t move. ” “OK,” the teacher said. “Then you can take the exam now. ”
The boys 7 (feel) very worried, but the teacher smiled. “Oh, don’t worry! It will be easy! ”she told them. When they 8 (sit) at their desks, the teacher gave them the exam papers. They 9 (open) the papers and saw only one question, “Which tyre was flat?”
As a result, they had different answers. They 10 (say) sorry to the teacher and the teacher said, “It’s not good to miss school and it’s not good to tell a lie, either. ”

1. was shining 2. had 3. were playing 4. thought 5. were walking/walked 6. rode/were riding 7. felt 8. were sitting/sat 9. opened 10. said

【分析】
这是一道英语时态填空题，解题时需先明确故事发生在过去，再结合每个空格的时间逻辑（动作的先后顺序、是否同时进行），判断应使用的时态：描述过去某一时刻正在进行的动作用过去进行时，描述过去发生的已完成动作或状态用一般过去时。
【解析】
1. 句意为“那是个美丽的春日，太阳正在照耀”，描述过去某个时刻正在进行的动作，用过去进行时was shining；
2. 句意为“尽管那天我们有一场英语考试”，描述过去存在的状态，用一般过去时had；
3. 句意为“当开始下大雨时，男孩们正在踢足球”，“踢足球”是过去下雨时正在进行的长动作，用过去进行时were playing；
4. 句意为“他们认为考试可能已经结束了”，描述过去的想法，用一般过去时thought；
5. 句意为“当他们在走廊行走时”，描述过去发生的动作，walked（一般过去时）或were walking（过去进行时）均可；
6. 句意为“当我们骑车去学校时”，描述过去发生的动作（rode）或当时正在进行的动作（were riding），两种都正确；
7. 句意为“男孩们感到非常担心”，描述过去的感受，用一般过去时felt；
8. 句意为“当他们坐在课桌旁时”，描述过去发生的动作（sat）或正在进行的动作（were sitting），两种都正确；
9. 句意为“他们打开试卷”，描述过去完成的动作，用一般过去时opened；
10. 句意为“他们向老师道歉”，描述过去完成的动作，用一般过去时said。
【答案】
1. was shining 2. had 3. were playing 4. thought 5. were walking/walked 6. rode/were riding 7. felt 8. were sitting/sat 9. opened 10. said
【知识点】
一般过去时、过去进行时
【点评】
本题围绕初中英语核心时态（一般过去时、过去进行时）展开，需结合语境区分动作状态，注重基础时态的运用能力，是典型的语境型时态考查题。
【难度系数】
0.5