Unit 2 Healthy Eating教學設計
二、學海導航
【學法指要】
單元句型思路明晰
1. even when + 從句
even when you are asleep , you are using energy . 甚至在你睡覺時，你也在消耗能量。
〖明晰〗even 作為副詞放在由when引起的時間狀語從句的前面起加強語氣的作用。
even when it is in august , the weather there is very cold .
even when he was taking a holiday he was worried about his work .
2 . 主語 + be considered + to be + 主語補足語
the chinese diet is considered to be the healthiest in the world . 中國飲食被認為是世界上最健康的飲食。
〖明晰〗consider 做“認為”時可以帶不定式的復合結構，即：主語 + consider + 賓語 + 不定式（主要是 to be 做賓語補足語）。如果將賓語變為主語，則 consider 用被動語態，原來作賓補的不定式便變成為主語補足語。注意：to be 常常被省略后成為：consider + 賓語 + 名詞（或者形容詞）。
he considered the task to be the most difficult one . → the task was considered to be the most difficult one by him .
we all consider his suggestion to be reasonable . → his suggestion is considered to be reasonable .
we consider this (to be) a useful book . → we consider this book useful .
單元難點疑點釋疑
1 . when playing football or basketball , you might be using 400 calories an hour . 踢足球或者打籃球時，你每小時可能要消耗 400 卡能量。
〖釋疑〗連詞 when , while 引起的時間狀語從句，如果從句中的主語與主句中的主語是同一人或物時，則可以省略主謂語，變成“when / while + ing”這中結構。
while he was doing the experiment , he noticed something strange . = while doing the experiment , he noticed something strange .
2 . in some parts of britain , one person in ten , by the age of thirty , has no teeth left . 在英國有些地方，十分之一的人年方三十，牙齒就掉光了。
〖釋疑〗 one person in ten 即 one person in ten persons 的省略，其意思為“十個中有一個人”。與 one person in ten 類似的結構有：one person out of ten , one out of ten persons 。但是，ten to one 是“十有八九，很可能”。
two teachers in ten are against this plan .
three out of four people (= three fourths of the people ) went there to have a look .
it will rain tonight ten to one .
另外，left 為過去分詞作定語修飾 teeth ，其意思是“剩余的”。
there is but one chance left . 只剩下一個機會。
3 . scores of people went there in the first few days after its opening . 開張的頭幾天，許許多多人到那家餐館去就餐。
〖釋疑〗after 為介詞，其后的物主代詞所有格 its 及名詞 opening (開張，開幕；開放)構成介詞短語作狀語。in the first few days “在頭幾天里”，這里，the first 不是“第一”，當其后接復數名詞時，意思是“頭幾個，第一批”。
i was one of the first people to visit the newly built factory .
【妙文賞析】