假如你发明的“飞行自行车”在学校科技节中获奖，因此你被推荐参加一个国际青少年科技展览。
审主题：审时态：一般现在时、一般将来时
审人称：第一、三人称
请根据以下提示内容，用英语介绍你的发明，并表达你对该发明的评价和期望。
提示：1.外观——两个轮子(wheel)，两只翅膀；
2.用途——可行驶于地面和空中，可拍照；
3.特点——速度快，使用太阳能(solar power)，环保；
4.改进计划(自行发挥1—2点)。
重要点
注意:1.必须包含上述所有要点；
审词数
2.词数80以上(文章的开头已给出,不计入总词数)。
My invention is a flying bike.
写作支架
开头 点明主题 My invention is a flying bike. It is !
中间 详细介绍该发明的相关信息 The flying bike has . It can .
Speak “fly” to the bike, and it will turn into a plane in 30 seconds.（高分句式1）
Then you can . It can be used to take photos, too. Instead of petrol, the bike uses , so it will not pollute the air. I will add a seat at the back of it so that it can carry two persons at the same time.（高分句式2）
结尾 表达评价与期望 My invention is useful. You can use it to . I think that lots of people will fall in love with it!（高分句式3）
优秀范文
My invention is a flying bike. It is fast, convenient and green!
The flying bike has two wheels and two wings. It can run on land and fly in the air. Speak “fly” to the bike, and it will turn into① a plane in 30 seconds. Then you can fly in the air. It can be used to take photos, too. Instead of ① petrol, the bike uses solar power, so it will not pollute the air. I will add a seat at the back of it so that② it can carry two persons at the same time.
My invention is useful. You can use it to go to farther places in a shorter time. I think that③ lots of people will fall in love with it!
亮点评析
①turn into、instead of属于含金量较高的短语,提升了本文的档次。
②使用so that引导的目的状语从句说明改进“飞行自行车”的目的,使得行文流畅。
③用“I think that…”句式表达出自己对这项发明的期望。

优秀范文
My invention is a flying bike. It is fast, convenient and green!
The flying bike has two wheels and two wings. It can run on land and fly in the air. Speak “fly” to the bike, and it will turn into① a plane in 30 seconds. Then you can fly in the air. It can be used to take photos, too. Instead of ① petrol, the bike uses solar power, so it will not pollute the air. I will add a seat at the back of it so that② it can carry two persons at the same time.
My invention is useful. You can use it to go to farther places in a shorter time. I think that③ lots of people will fall in love with it!
亮点评析
①turn into、instead of属于含金量较高的短语,提升了本文的档次。
②使用so that引导的目的状语从句说明改进“飞行自行车”的目的,使得行文流畅。
③用“I think that…”句式表达出自己对这项发明的期望。

【分析】
首先明确写作主题是介绍发明“飞行自行车”，需覆盖所有提示要点，时态用一般现在时（介绍发明现状）和一般将来时（写改进计划），人称用第一人称（介绍自身发明）和第三人称（描述发明功能）；其次按照写作支架结构展开：开头点明发明并概括特点，中间依次介绍外观、用途、特点、改进计划，运用指定高分句式，结尾表达评价与期望，确保所有要点（两轮子两翅膀、地面/空中行驶、拍照、速度快、太阳能环保、加后座）都包含，词数达标。
【解析】
按照写作步骤：1. 开头点明主题：My invention is a flying bike. It is fast, convenient and green! 2. 中间介绍外观与功能：The flying bike has two wheels and two wings. It can run on land and fly in the air. 运用高分句式：Speak “fly” to the bike, and it will turn into a plane in 30 seconds. Then you can fly in the air. It can be used to take photos, too. 接着说明动力特点：Instead of petrol, the bike uses solar power, so it will not pollute the air. 再写改进计划：I will add a seat at the back of it so that it can carry two persons at the same time. 3. 结尾表达评价与期望：My invention is useful. You can use it to go to farther places in a shorter time. I think that lots of people will fall in love with it! 补充亮点评析，确保符合要求。
【答案】
优秀范文
My invention is a flying bike. It is fast, convenient and green!
The flying bike has two wheels and two wings. It can run on land and fly in the air. Speak “fly” to the bike, and it will turn into a plane in 30 seconds. Then you can fly in the air. It can be used to take photos, too. Instead of petrol, the bike uses solar power, so it will not pollute the air. I will add a seat at the back of it so that it can carry two persons at the same time.
My invention is useful. You can use it to go to farther places in a shorter time. I think that lots of people will fall in love with it!
亮点评析
①turn into、instead of属于含金量较高的短语,提升了本文的档次。
②使用so that引导的目的状语从句说明改进“飞行自行车”的目的,使得行文流畅。
③用“I think that…”句式表达出自己对这项发明的期望。
【知识点】
英语说明文写作、一般现在时、一般将来时
【点评】
本文紧扣科技发明介绍主题，全面覆盖所有提示要点，运用祈使句+and+一般将来时、so that目的状语从句、I think that...等高分句式，使用优质短语提升表达档次，时态准确、人称恰当、结构清晰，词数达标，是一篇符合要求的优秀英语说明文。
【难度系数】
0.3