Unit 11 Working with Animals

一. 教學內容：unit 11 part 1繼續學習現在完成時來描述經歷 二. 教學重點：  1. 現在完成時中ever, never 的使用。  2. 現在完成時中的兩種動詞的使用。  3. 現在完成時與一般現在時，一般過去時的區分。  4. 重點詞組。 三. 具體內容：（一）present perfect with ever and never.e.g. have you ever seen a polar bear?i have never seen a polar bear.have you ever forgotten your homework?no, never.i’ve seen a dolphin, but i’ve never seen a whale. （二）two types of verbs in the present perfect.  1. there are two types of verbs in the present perfect. one type refers to an action that starts in the past and continues to the present. the time phrases with for or since are used with this type of verbs.e.g.he has had the book for three weeks.i have worked here for two months.he has been a teacher for ten years.they have lived in canada since 1997.he has taught me since i came to this school.注意：for + 時間段 如：for ten yearssince +時間點如：since nine o’clocksince + 時間段 + ago：since ten years agosince + 一般過去時態從句(主句是現在完成時)e.g.(1) they have lived in china _____ 1998.(2) we have studied english _____ 5 years.(3) joy _____  ______  (learn) chinese since she _____ (come) to china . 2. the other type refers to an action that took place at a specific time in the past and cannot continue. usually, for or since are not used.e.g.he has bought a book.the film has begun.i have borrowed a book from the library.注意：瞬間動作不能與表示一段時間的短語連用，應改用持續性動詞。常見的瞬間動詞與持續性動詞的轉換。come/go – be in/on            go out – be out        leave – be away                begin/start – be onbuy – have                    borrow/lend – keepjoin – be a member             die – be deadcatch a cold – have a cold        become – befall asleep – be asleep           open – be open get to know – know             close-be closedex. fill in the blanks.1. 這輛自行車我買了兩年了。i’ve  _____  the bike  _____  two years.