2.He continued doing research until a better strain of rice was found.

　　3.Many city kids look forward to visiting the countryside.

　　4.Not all students enjoy working in the fields.

　　5.They started producing hybrid rice in 1974.

　　6.I remember meeting the scientist while he was in Beijing last time.

　　Step 4 Grammar

　　T:Today,we are going to learn the v.-ing as a noun.So at first who can tell me what a noun can be used as in a sentence?And please give me some examples.

　　S:It can be used as subject.For example:Smoking is harmful to our health.

　　T:Now I think you have known how to use the v.-ing as subject.But how about others?

　　S:It can also be used as object.For example:I have forgotten seeing this film.

　　T:You are right.The v.-ing form can be used as object,too.Now let's come to know more about it.

　　T:Very good.(The teacher may give a systematical explanation of the grammar.)

　　Step 5 Homework

　　1.Finish the related exercises on Workbook.

　　2.Prepare for the next class.

　　3.Finish the exercises about the -ing form as the subject and object.

　　The Design of the Writing on the Blackboard

　　Unit 2　Working the land

　　Period 2　Learning about language

　　1.chemical adj.化学的;关于化学的

　　chemistry n.化学

　　2.Phrases that can be used with the -ing form:

　　be good at;care (little) about;dream of;devote...to;see the need for;be afraid of;be concerned about;be interested in 　　Record after Teaching