(共24张PPT)
英语
电子教案
七年级 下册
Wonders of nature
2
Unit
can describe the features of natural wonders
Objectives
learn new words about natural wonders
practise the pronunciation of /sp/ /st/ /sk/ /str/ /skw/
use comparatives and superlatives
Tasks
can find out what makes natural wonders beautiful
read a travel guide to Zhangye Geopark
listen to a conversation about the Great Barrier Reef
learn about landforms
can discuss experiences with nature and make a recommendation
Objectives
discuss experiences with different landforms
create a video recommending a place to be added to the Natural Wonders of the World
Tasks
can introduce a natural wonder using persuasive language
write about a natural wonder you have visited or plan to visit
Study the blue parts and answer the questions.
1
2
3
4
Q1 Which sentences compare two things
Q2 Which sentences compare three or more things
The mornings and evenings are cooler than the hot days.
The mornings and evenings are the coolest times.
June to September is the most wonderful time to visit.
June to September is a better time to visit than the other months.
Sentences 1 and 4.
Sentences 2 and 3.
Grammar highlights
-er and more ... are comparative forms. To compare two things, we use the comparatives with than. To compare three or more things, we use the with the superlatives. The superlative form is -est or most .... In general, we use -est for short words and most ... for longer words.
Read the sentences and complete the rules. Add examples of comparative and superlative forms.
a
b
c
d
e
f
g
The layers of sandstone were lifted higher and higher.
The Sahara Desert is the world’s largest desert.
The climate became colder and drier.
The Great Barrier Reef is the biggest coral reef system in the world.
Sunshine after a summer rain will make the colours even more beautiful.
Zhangye Geopark is one of the best geoparks in the world.
The Grand Canyon’s beauty and size make it one of the most easily recognisable natural wonders on Earth.
1
2
3
4
5
6
7
For one-syllable words: add -er/-est
high → ______ → highest
For one-syllable words ending in -e: add _______
large → _______ → largest
For words ending in -y: drop ___ and add _________
dry → drier → _______
For one-syllable words ending in vowel + consonant: double the
consonant and add ________
big → _______ → biggest
For words with two or more syllables: add __________
beautiful → more beautiful → ______________
Some words are irregular:
good → better → best
For adverbs ending in -ly: add ___________
easily → ___________ → most easily
higer
-r/-st
larger
y
-ier/-iest
-er/-est
driest
bigger
more/most
most beautiful
more/most
more easily
Circle the correct words to complete the sentences.
1
2
3
4
5
I want to visit Huangguoshu Falls someday. It looks really / more beautiful.
The Grand Canyon is amazing. But right now it is crowded / more crowded than last year.
The Nile is longer / the longest river in the world. It can take months to travel from one end to the other.
Mount Emei is nice / nicer. But Mount Taishan sounds more interesting / the most interesting to me.
The Yangtze River is the third longer / longest river in the world.
Read the table and write three sentences comparing the four oceans on Earth.
Ocean Surface Area (square kilometres) Average Depth
(metres)
The Pacific Ocean about 165.2 million about 4,282
The Atlantic Ocean about 106.4 million about 3,926
The Indian Ocean about 70.6 million about 3,963
The Arctic Ocean about 14 million about 1,205
Example
The Pacific Ocean is the largest ocean in the world. It is larger than the other oceans. It is deeper than the Atlantic Ocean.
The Li River is one of 1 _______________ (famous) attractions in China. It is seen as one of the world’s top ten watery wonders. It is known for some of the 2 ________ (green) hills, 3 _______ (clear) water, and strangest rocks that you have ever seen. 4 _________ (good) time to visit is during autumn when the trees and plants have beautiful colours. Travelling along the Li River during this season offers 5 ______________ (amazing) views than you can imagine.
Complete the passage about the Li River with the correct forms of the given words.
the most famous
greenest
clearest
The best
more amazing
The Great Barrier Reef
Listen and choose the best answer.
What is the most likely relationship between the two speakers
a Teacher and student.
b Tour guide and tourist.
c Mother and son.
It is made up of thousands of smaller reefs.
You can see the reef from 2 ______.
It is home to about 3 _____ kinds of coral.
Global warming makes some of the coral reefs appear 4 ______.
1 _______ about the Great Barrier Reef
Listen again and complete the chart.
The Great Barrier Reef
space
400
white
Facts
1
2
Which of the woman’s words surprises the man most
________________________________________________________________
How do you think we should look after the Great Barrier Reef
________________________________________________________________
________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________
The Great Barrier Reef
Answer the questions.
Subskill: Using intonation to understand the speaker’s feelings
The Great Barrier Reef can be seen from space.
We can look after the Great Barrier Reef by doing things like:
Teach everyone why the reef is special and how we can all help save it from getting hurt by global warming.
Don’t allow too much fishing.
Control the number of visitors to protect all the different sea animals and plants that live there.
Listen and pay attention to the pictures. Tick the landforms
you have seen.
Landforms
Subtitles on
Subtitles off
Landforms
Volcano Hills Island Ocean
River Mountains Waterfall Plain
Landforms
Listen and choose the best answers.
Subtitles on
Subtitles off
Landforms
1
2
You may learn about landforms on the ________ Channel on TV.
a News
b Discovery
c Film
d Sports
Which of the following statements is NOT true
a A mountain rises very high above the land around it.
b Volcanoes can create mountains as well as islands.
c An island must be a small piece of land separated by water.
d A plain is a very large area of flat land without hills.
Answer the question.
Landforms
Documentaries use a lot of bird’s eye view shots. Why do you think the video makers did this
What kind of landforms are you familiar with Work in pairs and discuss your experiences with different landforms. Use the questions to help you.
Experiences with different landforms
What’s the longest river you’ve ever seen
What’s the highest mountain you’ve ever climbed
What’s the largest lake you’ve ever been to in a boat
What’s the prettiest forest you’ve ever taken a photo of
What’s the most amazing place you’ve ever walked through
1
/
/
/
/
2
3
4
/
/
/
/
star
skirt
street
square
stand
ski
strange
squeeze
stop
sky
straight
squirrel
story
skin
stress
squash
stay
skip
strawberry
squeak
Listen and imitate. Pay attention to the purple letters and
then write down their pronunciations.
EXAMPLE /sp/ space speak sport spend special
st
sk
str
skw
/sp/ /st/ /sk/ /str/ /skw/
She is smart but speaks slowly. She likes eating special dark chocolates. Her skin is like snow. In summer, she goes swimming every day. In winter, she goes skiing. She is really a sports lover.
Read aloud.
/sp/ /st/ /sk/ /str/ /skw/
THANK YOU
