Example He has two sons who work in the same company. He has two sons, who work in the same company. Explanation Perhaps he has more than two sons. He has only two sons.

Step 2 Review of the attributive clause

1. Help students compare THAT and WHICH used in attributive clauses by completing the following sentences.

　1) Do you have anything __________ you don't understand?

　2) The only thing __________ we can do is to give you some advice.

　3) Who is the man __________ is standing there?

　4) Her bag, in __________ she put all her money, has been stolen.

　5) She heard a terrible noise, __________ brought her heart into her mouth.

Answers:

1) that 2) that 3) that 4) which 5) which 2. Ask students to deal with the attributive clauses beginning with "prep. + which / whom".

　1) Do you know the boy ____________ your mother is talking?

　2) He gave me some novels ____________ I am not very familiar.

　3) I still remember the day ____________ I first got to Paris.

　4) Do you like the book ____________ she paid $10?

　5) He built a telescope ____________ he could study the skies.

Answers:

1) to whom 2) with which 3) on which 4) for which 5). through which 3. Ask students to learn the usage of WHERE in attributive clauses. "Where" can be used to not only refer to a place, but also to represent a situation. Therefore, "where" can be used after such words as point, situation, part, case and condition.