T: Morning / afternoon, everyone. First let's check our homework, Exercises 6 && 7 on P74.

Check the answers with the whole class.

Step Ⅱ Writing

First write the following sentence on the blackboard:

T: I will tell you a story. One day, when Mr Stanton entered the classroom, Tom shouted "The teacher is a foolish duck." Everyone looked at Mr Stanton. To their surprise, the teacher said nothing but wrote a sentence on the blackboard. He said "Today we' ll learn punctuation marks." Mr Stanton said happily. Then he used two commas in the sentence. "Tom, said the teacher, is a foolish duck." "Please punctuate correctly next time, Tom." Mr Stanton said, while pointing to the blackboard.

Write another sentence on the blackboard:

Tom, said the teacher, is a foolish duck.

T: Now you know how important a comma is. Please observe the five sentences on P18 and tell me where we should use commas.

Let the students read the sentences and give their answers.

1. 用以将引导性或转折性词语如therefore, however, by the way 与句子的其他部分隔开。

2. 用来隔开行文中的词、词组或从句。

3. 用于分隔并列复合句，用于连词and, but, or 之前。

4. 用于插入句中的从句等成分之前。

T: Good! Now please punctuate the sentences shown on the slides.

Show the following sentences on the slides.

1. She is kind and patient and she explains English grammar so clearly that even I can understand it

2. Some of our class don't like her but most of us really appreciate her because her teaching is so well organized and clear

3. I've always hated making mistakes or pronouncing a word incorrectly when I speak