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I bought four things this morning. The dictionary was 5 times the cost of the book, the tie was 30 times the cost of the book, the watch was 4 times the cost of the tie, and I spent 312 dollars in total.
What was the price of the dictionary?
whose（特殊疑问词）：用于询问所有关系。对形容词性物主代词、名词性物主代词、名词所有格的两种情况（形容词性和名词性）进行提问。
I am a teacher. You are student. He is a student, too.
We/You/They are students.
人称代词宾格作宾语，表示动作行为的对象。
Give it to me. Let’s go (let’s =let us).
人称代词:人称代词又分为主格和宾格形式.主格通常做主语。宾格通常做动词或介词的宾语.
