综合英语2 Unit 4 water cycleppt课件
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to a rive. r or lake.
Wastewater treatment plant
Three major steps
•Preliminary step: mechanical processes separate large solids (sand, grit沙砾) and debris(残渣，废物) from the liquid •Primary step: mechanical and biological processes further separate water from waste materials •Secondary step: chemical pro. cesses kill remaining harmful bacteria
doubts. • Sorry, I’m not sure. • I can’t make up my mind whether to do … • I can’t decide … • I’m not really/too sure about … • I’m of two minds about … • I can’t say for certain. • I wouldn’t be too sure about …
.
Book 2-Unit 12
Discussion
Learn to understand the cultural implications of this proverb and trying to find examples in real life in its support.
The most unexpected moment in my life
.
Book 2-Unit 12
How to express uncertainty:
• Well, it’s possible I suppose, but I’m not really sure. • Well, it might be, but I doubt it. • Well, there’s always a chance, but I have my
Physical, chemical and biological processes for making wastewater suitable for human consumption and other purposes.
99.9% water
wastewater
Why wastewater treatment?
water molecules
Wastewater treatment plant
.
Sewer system An engineering marvel
It connects millions of homes, businesses, industries, and institutions to a network of underground pipes which transports wastewater to the wastewater treatment plant before it is released
I’m sure I’ll be very much interested in reading your article.
More Expressions for Certainty & Uncertainty
.
Book 2-Unit 12
How to express certainty:
• I’m quite sure/ certain (that) … • I’m absolutely sure/ certain (that) … • I’m fairly sure/ certain (that) … • I’m sure/ certain about … • I’ve no doubt about … • Yes, I’m one hundred percent sure. • Yes, certainly/definitely/of course. • Yes, without doubt. • Yes, really! • Yes, that’s obvious.
Unit 4
Water cycle
.
Part I Communicative Activities
.
Book 2-Unit 4
You may express uncertainty like this:
I’m not quite sure ...
You may express certainty like this:
.
Book 2-Unit 12
Extra expressions of the same functions:
- I don’t think there can be any doubt about/as to… - There is no/very little doubt in my mind about/as to… - It’s/That’s my conviction… - I’m (quite) convinced… - It’s quite certain that…Leabharlann Baidu
0.1% waste
.
Book 2-Unit 4
Wastewater treatment
Listen to a lecture given by an expert about wastewater treatment technologies. While you listen, take notes and complete the tasks on page 51.
- I’m afraid I can’t be certain about… - There’s some doubt in my mind about… - I’m not at all convinced/certain… - One can’t say with any certainty that… - There’s still an element of doubt about…
.
The unexpected
always happens.
Book 2-Unit 12
Story Telling
The most unexpected moment in my life
When Where Who What Why How Result
.
Book 2-Unit 4
Wastewater treatment
Wastewater treatment plant
Three major steps
•Preliminary step: mechanical processes separate large solids (sand, grit沙砾) and debris(残渣，废物) from the liquid •Primary step: mechanical and biological processes further separate water from waste materials •Secondary step: chemical pro. cesses kill remaining harmful bacteria
doubts. • Sorry, I’m not sure. • I can’t make up my mind whether to do … • I can’t decide … • I’m not really/too sure about … • I’m of two minds about … • I can’t say for certain. • I wouldn’t be too sure about …
.
Book 2-Unit 12
Discussion
Learn to understand the cultural implications of this proverb and trying to find examples in real life in its support.
The most unexpected moment in my life
.
Book 2-Unit 12
How to express uncertainty:
• Well, it’s possible I suppose, but I’m not really sure. • Well, it might be, but I doubt it. • Well, there’s always a chance, but I have my
Physical, chemical and biological processes for making wastewater suitable for human consumption and other purposes.
99.9% water
wastewater
Why wastewater treatment?
water molecules
Wastewater treatment plant
.
Sewer system An engineering marvel
It connects millions of homes, businesses, industries, and institutions to a network of underground pipes which transports wastewater to the wastewater treatment plant before it is released
I’m sure I’ll be very much interested in reading your article.
More Expressions for Certainty & Uncertainty
.
Book 2-Unit 12
How to express certainty:
• I’m quite sure/ certain (that) … • I’m absolutely sure/ certain (that) … • I’m fairly sure/ certain (that) … • I’m sure/ certain about … • I’ve no doubt about … • Yes, I’m one hundred percent sure. • Yes, certainly/definitely/of course. • Yes, without doubt. • Yes, really! • Yes, that’s obvious.
Unit 4
Water cycle
.
Part I Communicative Activities
.
Book 2-Unit 4
You may express uncertainty like this:
I’m not quite sure ...
You may express certainty like this:
.
Book 2-Unit 12
Extra expressions of the same functions:
- I don’t think there can be any doubt about/as to… - There is no/very little doubt in my mind about/as to… - It’s/That’s my conviction… - I’m (quite) convinced… - It’s quite certain that…Leabharlann Baidu
0.1% waste
.
Book 2-Unit 4
Wastewater treatment
Listen to a lecture given by an expert about wastewater treatment technologies. While you listen, take notes and complete the tasks on page 51.
- I’m afraid I can’t be certain about… - There’s some doubt in my mind about… - I’m not at all convinced/certain… - One can’t say with any certainty that… - There’s still an element of doubt about…
.
The unexpected
always happens.
Book 2-Unit 12
Story Telling
The most unexpected moment in my life
When Where Who What Why How Result
.
Book 2-Unit 4
Wastewater treatment