高二英語Astronomy教案

5.i don’t think so.we should protect all the living things,including plants and animals,because all of them are part of nature.if one of them is not well protected,the balance of nature will be destroyed.that will perhaps cause another living thing to die out.no matter which of them dies out,our nature will lose some of its color.robots and machines are made by man.we can decide how many of them will be needed,according to their use.if we need more,we can make more.that will not affect the balance of nature.and i think we should protect our oceans and earth,too.
t:that’s a very good topic.you can continue discussing it after class,if you like.it will be very interesting.
step ⅳ reading aloud and practice
t:now,let’s listen to the tape.i’ll play it twice.the first time i play the tape,listen carefully.the second time i play it,you can read after the tape.after that,you read the text aloud,paying much attention to the pronunciation and intonation.
(play the tape for students to listen and repeat.then give them several minutes to read aloud.at last,ask a couple of students to read the text.)
t:very good.(show the phrases on the screen.)now,please look at the screen.make sentences with the phrases shown on the screen.you can do it in pairs.
make sentences with the following phrases:
in modern times      believe in
start with            a time
have…in common    with respect
in all ways          ask for
sample sentences:
in modern times:
in modern times many peasants are very rich.
believe in:
you can believe in him;he’ll never let you down.
start with:
the school started with 300 pupils;now there are double that number.
a time:
i don’t care for the place at first,but after a time i got to like it.
have…in common:
real friends should have everything in common.
with respect:
we should treat everybody with respect.
in all ways:
all the people should be treated equally in all ways.
ask for:
she entered it,asked for a cup of tea,and sat down.there’s been a gentleman here asking for you.
step ⅴ writing
t:now,let’s do some writing practice.first look at the information on page 31.read it and then work out the details for king’s action in birmingham after the example.pair work.a few minutes later,we’ll check the answers.
(students begin to prepare and after a while,the teacher says the following.)
t:have you finished?
ss:yes.
t:who would like to give us the answer?