Unit 4 Astronomy: the science of stars教案
c. why do animals first appear in the sea?
d. why do green plants help life to develop?
e. why were mammals different from other animals?
discuss the answers with the whole class.
2. skimming
in this part, students will read the text again and finish part 1,2,3
t: now skim the passage fast to finish part1,2,3,4 then we will check the answers together.
key to part 1: dbigehacfj
discuss the rest with the students.
step ⅴ listening
listen to the tape for the students to follow and have further understanding of the passage.
t: read after the tape, then answer me some questions with your book closed.
a. how did water come into being on the earth?
b. why is water important on earth?
step ⅵ language points
t: turn to page 25. let’s look at the sentences:
a. it exploded loudly with fire and rock, which were in time to produce the water vapour.
which leads non-restrictive attributive clause.
in time: sooner or later; eventually
i will see him in time.
in time ( for sth/to do sth): not late
she will be back in time to prepare dinner.
in/out of time: in/not in the correct time
the audience clapped in time to the music.
b. nobody knew that it was going to be different from other planets going around the sun.
be different from: not like someone or something else in one or more ways
city life is quite different from country life.
c. whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
to come: serves as attributive
she is the last person to do such a thing.
depend on: something might only happen or be true if the circumstances are right for it
our success depends on whether everyone works hard or not.
d. walking does need a bit of practice now that gravity has changed.
now that: because of the fact that
now that i am free, i can enjoy music for a while.
now that you have grown up, you can decide it by yourself.
step ⅶ homework
1. retell the passage
2. remember important language points
the second period language study
step ⅰ revision
1. check retelling of the passage
2. translate the following sentences.
a. 你遲早會(huì)成功的.
b. 我的車(chē)與你的不一樣.
c. 站在門(mén)旁邊的那個(gè)人是誰(shuí)?
d. 他總是第一個(gè)來(lái),最后一個(gè)走.
e. 既然你已經(jīng)長(zhǎng)大了,你自己決定吧.
suggested answers:
a. you will succeed in time.
b. my car is different from yours.
c. who is the person standing by the door?
d. he is always the first to come and the last to go.
e. now that you have grown up you can decide it yourself.
step ⅱ word study
this part is a consolidation of the words learnt in this unit. ask the students to do the exercises individually.