2020版英语新教材外研必修一同步学案：5.3Section+Ⅲ和答案
[即学即练] 单句语法填空
(1)There is a wide variety (various) of patterns to choose from.
(2)The toy boat has various (vary) speeds.
(3)The weather here varies (various) from hour to hour.
3．average adj.平均的 v．平均为 n．平均数
on average 平均来看
above/below average 在平均值以上/以下
an average of 平均是……
①Fred was an average student, but not an average person. 弗雷德是一个普通学生，但绝不是个普通人。 ②We fail one student per year on average. 我们平均每年有一个学生不及格。
③It takes an average of ten weeks for a house sale to be completed.
售出一幢房子平均需要10周的时间。 [即学即练] 单句语法填空
(1)It's said that the press receives an average of nearly 100 articles a day.
(2)On average we receive ten letters each day.
4．concentrate v．专注；专心；集中(注意力思想等)
(1)concentrate on 专注于，专心于
concentrate one's attention/mind on... 将注意力/思想集中于……
(2)concentration n. 专注，集中
(3)concentrated adj. 专注的
①Some students can't concentrate on their study and tend to feel sleepy in class.
有些学生不能全神贯注学习，往往在课堂上犯困。
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2020版英语新教材外研必修一同步学案：5.3Section+Ⅲ和答案
②I lost my concentration and nearly drove into a bridge. 我开车时走神了，差点撞上一座桥。
③He made a concentrated effort to finish the work on time.
他全力以赴以按时完成这项工作。 [即学即练] 单句语法填空
(1)Stress and tiredness often result in a lack of concentration (concentrate)．
(2)She has turned down several invitations to star at shows in order to concentrate on her studies.
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2020版英语新教材外研必修一同步学案：5.3Section+Ⅲ和答案
5.scene n．场面；场景；现场；景色
on the scene＝on the spot 在现场；当场 ①What a beautiful scene!
多么美丽的景色呀！
②The film contains some violent scenes.
这部电影有几处暴力场面。
③Thousands of repair workers are on the scene and hope to restore service soon.
数千名修理工在现场工作，希望能尽快恢复服务。 [即学即练] 写出下列句子中scene的词义
(1)The hero met with the heroine in the opening scene of the play.场景
(2)She returned home to find a scene of mess.场面 (3)Having received an emergency call, the police were soon on the scene.现场
6．freeze v．呆住；结冰；冷冻；冻结
(1)freezing adj. 极冷的，严寒的 freezing point 冰点 freezing cold 极其寒冷
(2)freezer n. 冰柜
①I froze with terror as the door slowly opened.
门慢慢打开时我吓呆了。
②Our professor told us that salt water freezes at a lower temperature than fresh water.
我们的教授告诉我们盐水的冻结温度比淡水低。
③It is truly impressive to appreciate the scenery of the beautiful water fowls in the densely populated city during the freezing winter.
在寒冷的冬天，在人口稠密的城市里欣赏美丽的水鸟，真是令人印象深刻。
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2020版英语新教材外研必修一同步学案：5.3Section+Ⅲ和答案
④It's freezing cold outside.外面极为寒冷。 [即学即练] 用freeze的正确形式填空
(1)Her fingers were frozen in the freezing water. (2)Alcohol has a lower freezing point than water.
(3)On a freezing cold night, the little girl was almost frozen in a street corner.
7．recover v．恢复，痊愈；重新获得
(1)recover oneself 镇定下来 recover from... 从……中康复
(2)recovery n. 痊愈，恢复
①She recovered consciousness after about twenty minutes. 大约20分钟后，她恢复了知觉。
②He recovered himself enough to speak calmly.
他镇定下来，平静地说话。
③It may take the body a long time to recover from an injury.
身体可能要花很长一段时间才能从伤病中痊愈。 [即学即练] 单句语法填空
(1)They are truly good birds that are worth every effort we put into recovering (recover) them.
(2)He has now made a full recovery (recover) from his suffering.
(3)Smith recovered from the cancer after standing great pains.,联想拓展：
scene 后面有定语从句修饰时，定语从句多由where引导，scene在定语从句中充当地点状语，类似的还有spot, position, stage, situation等。
联想拓展：
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