北京大妞轩儿
英文是：My brother is preparing for the exam at home.
重点词汇：exam
英［ɪɡ＇zæm］
释义：
n.考试；试卷；＜美＞医学检查
［复数：exams］
短语：
final exam期末考试；期终考试；期末考；最终试练
例句
用作名词（n.）
He repeatedly fails to pass the exam.
他考了多次都不及格。
I was really in a fog after the exam.
考完试后，我真的感到稀里糊涂。
cheese酸奶
安静点！你姐姐正在备考Be quiet！ Your sister is preparing for the exam.安静点！你姐姐正在备考Be quiet！ Your sister is preparing for the exam.
维基先生Wiki
备考可翻译为： prepare for the test例句： The students are busy preparing for the English test.
