Question

Lily is ____ girl. A. a 8-years-old B. an 8-year-old C. an 8-years-old D. a 8-year-old

Answer 1

Lily
is
____
girl.
选
B.
an
8-year-old
复合形容词，中间加-连接，名词用单数形式
8发音元音开头，所以用an
He
wrote
an
800-word
story.他写了篇800字的故事。
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Answer 2

选
B
解题秘诀
1.
有连字符的情况下，名词用单数，所以排除
A
和
C
2.
数字
8
的单词是eight
，是个元音，所以用
an，排除
A