I visited the city last year.

　　2.Do you know the scientist?

　　We talked about the scientist just now.

　　3.Pandas eat bamboo.

　　It is almost the only food they like.

　　4.The girl is my sister.

　　The girl is dressed in a red coat.

拓展

　　Ⅰ.Whether to choose "that" or not?

　　1.He told me everything (that)he knows.

　　2.All the books (that)you offered have been given out.

　　3.This is the best film (that)I have ever seen.

　　4.We talked about the person and things that we remember.

　　5.Our English teacher loves us all,which makes us happy.

　　Conclusion:

　　只用that的情况:

　　1)Sentence 1:先行词为　　　,all,nothing,anything,something,little,much等。

　　2)Sentence 2:先行词被　　　,any,each,every,much,little,some,few,no,the only,the very等修饰时。

　　3)Sentence 3: 先行词前有形容词　　　,序数词修饰时。

　　4)Sentence 4:先行词是　　　。

　　不用that的情况:

　　5)Sentence 5:非限制性定语从句中,指人用who(主语)/whom(宾语);指物用　　　。

　　Ⅱ."As" as a relative pronoun.

　　1.You may take as many books as you want.

　　2.The world has been changing at such a high speed as no one has expected.

　　3.As is known to us all,light travels faster than sound.

　　Conclusion:

　　Sentences 1,2: 限定性定语从句中用在固定搭配　　　,so....as,　　　,the same...as中。

　　Sentence 3:在非限定性定语从句中作主语或宾语,常译做"正如"。

　　Ⅲ.Fill in the blanks.

　　1.This is the most expensive book 　　　　 is sold in this shop.

　　2.Do you agree with everything 　　　　 he said at the meeting?

　　3.This is the only shop 　　　　 sells this kind of machine.

　　4.I have read all the books 　　　　 you gave me.

　　5.This is the first thing 　　　　 I want to say.

　　6.The TV play I watched last night is the best one 　　　　 I have watched this year.

7.Tell us about the people and the places 　　　　 are different from us.