Making a difference（The Second Period）

t: now, let's look at the screen. i’ll explain some language points to you.
   (show the screen.)
useful expressions:
1. work on+ n./pron./v. -ing
  e.g. he is working on a report of the experiment.
 he is working on inventing a new machine for office work.
2. go by: pass
  e. g. time went by slowly.
  and so the months and years went by.
3. be/get engaged (to sb.): be bound by a promise to marry
  e.g.. tom is/gets engaged to mary.
 tom and mary are/get engaged.
4. go on with sth..: continue with sth.
  e. g. go on with your work..
  you may go on with your discussion.
5. dream of: imagine
  e. g. i have always dreamed of a trip to england.
  he dreamed of becoming a pilot when he was in the middle school.
6. turn out: prove(to be)
  e.g. everything turned out satisfactory.
 it looked like rain this morning, but it has turned out to be a fine day.
sentence pattern:
  there is no point (in) doing sth. =there is no good reason for doing sth.
e. g. there is no point in doing so.
  there is not much point in complaining; they never take any notice.
    (bb: work on, go by, be/get engaged (to sb. ) , go on with sth. ,dream of, turn out, there is no point(in) doing sth.)
step ⅳ listening and consolidation
t: now i’ll play the tape. you can follow it in a low voice. pay attention to your pronunciation and intonation.
   (after that, teacher asks the students to do ex. 1 in post-reading)
t: ok. now look at ex. 1 in post-reading. choose the best answer for each of the questions. if you have some difficulty, you may discuss it with your partner. after a while, i'll ask some of       you to do it.
   (the students begin to prepare this exercise. after a while, teacher begins to collect the answers.)
suggested answers:
    1. c 2. b 3. b
step v discussion
  t: ok. let's have a discussion. work in pairs or in groups of four. discuss how to solve the problems in the scientific method.
   (show the following on the screen.)
  how would you use the scientific method to solve the following problems?
  l. how can we grow rice in areas where there is little water?
  2. how can i make my bike go faster?
  3. what was life like 5 000 years ago?
  4. how can i improve my english?
  5. how do people make friends?
    (give the students four minutes to discuss those questions. teacher may go among the students and join them. four minutes later, ask some students to report their results of the discussion.)