A conversation to begin
A: Watch out! Do not burn that plastic for a demonstration.
B: You’re right. The smoke could be harmful.
A: Let’s use a diagram and a verified source instead.
B: I’ll put the material away and tell the teacher.
Tiếng Anh 11
Tiếng AnhLớp 11Phần 6. Unit 5: Global warming
Getting Started
Mục tiêu bài học
- Follow the opening exchange, identify speaker intentions and connect the unit topic with useful language.
Bài giảng
Meaning before form
A present-participle clause usually has an active meaning: Burning fuel, the engine releases gases. A past-participle clause often has a passive meaning: Heated by sunlight, the surface warms. The understood subject must match the main-clause subject; avoid dangling participles. These shortened clauses may express reason, time or a related action, so expand them to check meaning.
Topic preview: Burning fossil fuels increases greenhouse-gas concentrations, while incomplete combustion can produce black carbon. These are related but not identical problems. Black carbon is a component of soot, not another name for carbon dioxide. Reducing unnecessary fuel use helps, yet a school activity must not pretend to solve global warming alone. I suggest an information stand explaining one mechanism and one feasible action, such as reducing unnecessary vehicle idling through the school’s authorised arrangements. We would ask a science teacher to check the source notes before displaying them. We must not burn waste to produce a dramatic demonstration. A drawing can explain a process without exposing people to smoke. We should also distinguish a proposed action from a measured reduction and explain what evidence would be needed to check progress.
Follow-up: Does one smoky morning prove a global climate trend?
Response: No. A brief local event cannot establish a long-term global trend.
Khái niệm chính
- Sentence stress and rhythm
- Burning FOSSIL FUELS releases CARBON DIOXIDE. We need CLEANER ENERGY, not just a NEW SLOGAN. Content words form beats; contrast may shift emphasis. Say the second sentence with stress on cleaner, then slogan, and explain the different focus. Keep unstressed words audible without giving every word equal stress.
- Grammar
- A present-participle clause usually has an active meaning: Burning fuel, the engine releases gases. A past-participle clause often has a passive meaning: Heated by sunlight, the surface warms. The understood subject must match the main-clause subject; avoid dangling participles. These shortened clauses may express reason, time or a related action, so expand them to check meaning.
Từ vựng
greenhouse gas
khí nhà kính
emission
phát thải
black carbon
cacbon đen
fossil fuel
nhiên liệu hoá thạch
mitigation
giảm nhẹ
climate
khí hậu
Ghi nhớ
Follow the opening exchange, identify speaker intentions and connect the unit topic with useful language.
Dễ nhầm
- Do not turn an illustrative example into a claimed observation.
- Keep legitimate accent and wording variants when they preserve meaning.
Bài tập
Đã đúng 0/4 câu
- Câu 1Mức 1Ghép nối
Match each topic expression with its meaning in this unit.
Chạm một ý bên trái rồi chạm ý tương ứng bên phải để ghép cặp.
- Câu 2Mức 1Trắc nghiệm 1 đáp án
___ fossil fuels, factories release carbon dioxide.
- Câu 3Mức 1Trắc nghiệm 1 đáp án
___ by smoke, the room became difficult to use.
- Câu 4Mức 2Trắc nghiệm 1 đáp án
Choose the sentence without a dangling participle.
Đọc ngữ liệu
Conversation for the following model-analysis tasks
A: Watch out! Do not burn that plastic for a demonstration.
B: You’re right. The smoke could be harmful.
A: Let’s use a diagram and a verified source instead.
B: I’ll put the material away and tell the teacher.- Câu 5Mức 2Tự luận
State the purpose and audience of this short everyday conversation on “Global warming”. Support your answer with one detail.
0 từ
0/10 ảnhCó thể chụp nhiều trang. Ảnh được lưu cùng bài làm và giáo viên sẽ chấm trên ảnh.
- Câu 6Mức 2Tự luận
Explain how the opening introduces the topic. Identify the actual opening sentence.
0 từ
0/10 ảnhCó thể chụp nhiều trang. Ảnh được lưu cùng bài làm và giáo viên sẽ chấm trên ảnh.
- Câu 7Mức 2Tự luận
Select two useful details from the model and explain why including them is better than saying only that the topic is important.
0 từ
0/10 ảnhCó thể chụp nhiều trang. Ảnh được lưu cùng bài làm và giáo viên sẽ chấm trên ảnh.
- Câu 8Mức 3Tự luận
Write a three-sentence summary using only information in the model. Keep any condition or limit that is essential to its meaning.
0 từ
0/10 ảnhCó thể chụp nhiều trang. Ảnh được lưu cùng bài làm và giáo viên sẽ chấm trên ảnh.