Unit 2.3 Discovering Useful Structures & Listening and Talking -2020-2021学年高一英语上学期同步课堂帮帮帮必修第二册（人教版2019）

Unit 2 WILDLIFE PROTECTION 2.3 Discovering Useful Structures & Listening and Talking 【词形转换】 1．deer n. 鹿→deer n. (pl.) 鹿 2．kangaroo n. 袋鼠→kangaroos n. (pl.) 袋鼠 3．net n. 网→Internet n. 互联网 4．neighbour n. 邻居→neighbourhood n. 临近的地方；街区 5．due_to 由于；因为 6．bird_field_guide 鸟类图鉴 7．search_for 搜索；查找 8．paper_cut­outs 剪纸 【单词详解】 1 reduce vt. 减少(教材P18) 归纳 拓展 reduce to 使降低到；遭受 reduce by 降低了 reduce sth. from sth. to sth. 把……从……减少到…… reduce price 降价；削价；减价 reduce sth. to sth. 将……概括成(或简化为) ①Costs have_been_reduced_by 20% over the past year. 过去一年，各项费用已经减少了20%。 ②The skirt was_reduced_to ￡10 in the sales. 在大减价期间，这条裙子减价到10英镑。 ③The number of employees was_reduced_from_40_to_25. 雇员人数从40人减少到了25人。 ④We can reduce the problem to two main issues. 我们可以将这个问题概括成两个要点。 (1)单句语法填空 ①The temperature is 36 degrees, but it will be reduced ________ 20 degrees in the night. ②He weighed 75 kilos last month, and now his weight has been reduced ________ 10 kilos. 答案：①to　②by (2)单句写作 职工人数从13,000人减少到了7,500人。 The workforce was red