points. One is adverbial clause of time, and the other is the past perfect tense. Now before our new class, let's play a game. Here are some cards in my hand. There is a Chinese sentence in each card. I will show them to you one by one. When you see it, please translate it into English immediately. Are you clear?

Ss: Yes.

T: OK. Are you ready? Let's go.

Show the cards one by one.

1. 我们到家的时候天已经快黑了。

S1: When we reached home, it was getting dark.

2.该工作的时候就工作, 该玩的时候就玩。

S2: Work while you work, play while you play.

3. 我上学之前, 一点英语都不懂。

S3: I didn't know any English before I started school.

4. 他们很兴奋, 以至近天明才睡着。

S4: They were so excited that they didn't fall asleep until it was almost dawn.

5. 自从大学毕业以后, 他一直在这里工作。

S5: He has been working here ever since he left university.

Task 2 Explanation

T: OK. All of you are wonderful. Now let's find out the conjunctive adverb in each sentence. Any volunteers?

S: In the first sentence, it's when.

S: The second, while.

S: The third, before.

S: The fourth, until.

S: The fifth, ever since.

T: You five did very well. Now let's analyze the above five sentences. Please tell me which action happens first, the one in the main clause or the one in the subordinate clause.

S1: In the first sentence two actions happen at the same time.

T: Very good! The second one?