问题
选择题
On ________ Friday when Tom was having an art lesson，as he had no color pencils with him，he drew ________ blue sun with his pen.
A．/；the
B．/；a
C．the；the
D．a；a
答案
答案：D
有些考生认为“Friday”前面不用冠词，而sun是世界上独一无二的事物，前面应用定冠词，于是将答案错选为A。事实上，当指某个星期几时，要用不定冠词；当sun，moon，world等前面有形容词修饰时，其前应该用不定冠词，故正确答案为D。