Unit 3 Life in the future教學(xué)設(shè)計與反思

過去分詞作狀語：用作狀語的過去分詞通常來自及物動詞。過去分詞用作狀語時，修飾主句的謂語動詞，意義上相當(dāng)于狀語從句，表示時間、條件、原因、伴隨狀況等。過去分詞作狀語，前邊往往可以加when, while, as if, as though。一般說來，這種結(jié)構(gòu)的邏輯主語必須與主句的主語一致。例如：whenever praised, she blushes.（作時間狀語）= whenever she is praised, she blushes.united, we stand; divided, we fall.（作條件狀語）= if we are united, we stand; if we are divided, we fall.written in great haste, this book is full of errors.（作原因狀語）= because this book is written in great haste, it is full of errors.mary was reading a love story, completely lost to the romantic life.（作伴隨狀語）= mary was reading a love story, and she was completely lost to the romantic life.although born in germany, john lives and works in u.s.a.（作讓步狀語）= although john was born in germany, he lives and works in u.s.a.task 2 make clear to the ss the usage of the past participle as the attribute.t: now please look at these two sentences:1. i followed him to collect a hovering carriage driven by computer.= i followed him to collect a hovering carriage that / which was driven by computer.2. tomorrow you will be ready for some visits organized by the company.= tomorrow you will be ready for some visits that / which was organized by the company.過去分詞作定語：a. 用作前置定語的過去分詞通常來自及物動詞，帶有被動意義和完成意義。例如：we like skating in the frozen lake in the winter.= we like skating in the lake which has been frozen in the winter.how many finished products have you got up to now?= how many products that have been finished have you got up to now?來自不及物動詞的過去分詞很少能單獨用作前置定語，能作這樣用的僅限以下幾個詞，這時僅表示完成意義，不表示被動意義：a retired worker = a worker who has retiredan escaped prisoner = a prisoner who has escapeda faded / withered flower = a flower that has faded / witheredfallen leaves = leaves that have fallenthe risen sun = the sun that has just risena returned student = a student who has returnedvanished treasure = treasure that has vanishedb. 用作后置定語的過去分詞通常也來自及物動詞，表示被動意義和完成意義。這明相當(dāng)于一個定語從句。例如：things seen are better than things heard.= things that / which are seen are better than things that / which are heard.the lobster broiled over charcoal was delicious.= the lobster that / which was broiled over charcoal was delicious.then let the ss do e. 1－4 on pages 20 ＆ 21 and exercises in using structures in workbook to consolidate what they have learnt. and check the answers. if time permits, let the ss learn the following usage of the past participle in the class.