分类：教育/科学-外语学习-英语考试
问题：英语选择题1.Mymotherisusuallyondutyin 
1.My mother is usually on duty in her  every_____few days.A.a       B.the      C./2.Most of_____boys in our class are insterested in biology.A./           B.the3.The furniture on display is on sale for____half price.A./           B.the4.What______did you do las1.My mother is usually on duty in her  every_____few days.A.a       B.the      C./2.Most of_____boys in our class are insterested in biology.A./           B.the3.The furniture on display is on sale for____half price.A./           B.the4.What______did you do last night?A.on earth     B.in world     C.on the earthD.on the world      这到题拜托翻译一下5.Africa and Asia are separated by the Suez Canal. 在“Suez Canal"前，为什么要加“the"? 
回答：1. A.a
a few 是几个，一些；every a few days 每隔几天
the few是“少数，少数人”

2. B.the
most of the +n（单数或复数） 是“大多数……”，most再这是
名词

3. A./ 
half+不可数名词，或half a +可数名词:一半的意思

4. A.on earth 
（昨天晚上你究竟干了什么？）
on earth:是“究竟，到底”，
in the world才有“究竟”的意思

5.
特指苏伊士运河，应该加the（查了一下语法书，江、河、湖、海、洋、运河的专有名词都加定冠词the.如:the Yangtze River,the Red Sea, the Panama Canal)