1、Unit 5 A delicate world Leading-inWhile-classAfter-classPart.1 Leading-inissue意思 _ 词性 _意思 _ 词性 _常用搭配a key/sensitive/controversial issue 关键的/敏感的/有争议的问题issue warm clothing to the survivors=issue the survivors with warm clothing给幸存者分发御寒衣物issue a passport/visa 签发护照/签证issue a magazine发行一本杂志issue a set of
2、 stamps发行一套邮票练习：The police _(issue)an appeal for witnesses before the reporters came.had issued appropriate意思 _ 词性 _常见用法be appropriate to/for sth 对适合It is appropriate(for sb)to do sth(对于某人来说)做某事合适联想词appropriately adv.恰当地inappropriate adj.不合适的；不恰当的练习：现在发表演讲是不是时候？_Is now an appropriate time to make a
3、speech?absorb意思 _ 词性 _常用搭配be/get absorbed in 全神贯注于be absorbed into 被纳入/并入absorption n.吸收；并入；全神贯注练习：Catherine was seated in the sofa,totally _(absorb)in the book about youth and love.absorbed Part.2 While-classLeading inLook at the sentences and answer the questions.Sentence(a)and(c)is from the readi
4、ng passage.a No visitor would think it surprising that the island is a UNESCO World Heritage Site.b No visitor would think that the island being a UNESCO World Heritage Site is surprising.c Experts felt it necessary to come up with a plan to remove all the rabbits from the island.d Experts felt to c
5、ome up with a plan to remove all the rabbits from the island was necessary.What does it refer to in sentences(a)and(c)?What is the difference between the sentences in each group?think.think.当不定式（短语）、动名词（短语）或从句在句中作宾语时，为使句子结构平衡，常用it作形式宾语，将真正的宾语放在句子后面。it作形式宾语有以下几种情况：（1）动词+it+名词词组/形容词+从句 The detective f
6、ound it obvious that the house had been broken into the day before.侦探发现这所房子显然是前一天被人闯入过。（2）动词+it+名词词组/形容词+动词不定式（短语）/动名词（短语）No matter where he is,he makes it a rule to go for a walk before breakfast.不管他在哪儿，早餐前都要去散步，这是他的惯例。Suggested answers:many people think it a good idea to keep this turtle as a pet
7、believe it no big issue to release them into the wild people have found it a threat to other species to release these turtles into the wild Experts consider it important for owners to keep their pets in an enclosed areaPart.3 After-classLook at the pictures of the Saihanba National Forest Park and d
8、escribe its changes using it as an empty object where appropriate.You may refer to the words and expressions in the table for help.Suggested answers:I think it a breakthrough to transform a desert into a forest.I think it likely to plant trees in the desert.I think it impossible that crops could be grown in this area before.I think it unrealistic to investigate various plant species here.第一步：学生分组 Describe how a place you know has changed using it as an empty object where appropriate.第二步：请个别学生分享。Thank you!
