conjunctions when and if.They are used to connect sentences or parts of sentences.Then finish the exercise below.

　　(The teacher gives the students two or more minutes to prepare.)

　　(Two or more minutes later.)

　　T:Have you yet finished it?

　　Ss:Yes.

　　T:Now look at the screen and see if your choices are correct.

　　(The teacher shows the answers on the screen.)

　　Suggested answers:

　　The following statements are true:1,3,4 and 5

　　T:Well done!From the above two sentences and exercise we can get some information about adverbial clause of condition.It describes common situations which were introduced by when and if.Meanwhile,it usually explains the result of the situation in the other part of the sentence and uses the present tense in both parts.If the main clause is located at the beginning of the whole sentence,adverbial clause just follows it.However,if the result lies at the end of the whole sentence,the adverbial clause must be put at the beginning and followed by a comma.Now let's do more exercises.Look at Activity 2.Read through the passage in the reading part once more and try to find more sentences with when or if.

　　(A few minutes later.)

　　T:Are you ready?Now let's check the answers.How many sentences of this kind have you found yet?

　　Ss:4.

　　T:OK.The first sentence,who shows your answer to others?

　　S:If our right hand is busy greeting someone,it cannot be holding a weapon.

　　T:Good.Sit down,please.No.2?Volunteer?

　　S:Let me try.If you shake hands with someone,you show you trust them.

　　T:Quiet right.The third one?Anybody,this time?

　　S:We shake hands when we make a deal.

　　T:Well done.What about the last one?

　　S:When we greet someone,we put the right hand over the left and bow slightly.

　　T:Great.You all did good jobs.

　　(Show the above sentences on the screen.)

　　1.If our right hand is busy greeting someone,it cannot be holding a weapon.

　　2.If you shake hands with someone,you show you trust them.

　　3.We shake hands when we make a deal.

　　4.When we greet someone,we put the right hand over the left and bow slightly.

　　T:Just now we have found another four examples with conjunctions when and if.You may have a better understanding of this sentence structure.Now let's do another exercise to consolidate what we learned.Match the two parts of these sentences about body language in Europe or America.First you do it by yourself,then check it with your partner.

　　(After several minutes.)

　　T:Are you ready?

Ss:Yeah.