How much does this armchair cost? 汉语意思是:这把椅子值多少钱?
改为同义句可以是: How much is this armchair? 还可以是: What's the price of this armchair?
改为陈述句可以是: This armchair costs ten dollars. 或者 This armchair is ten dollars.
答:我们认为这个英语句子的同义句应该是这样转换:
How much does this armchair cost?
What is the price of this armchair?
这个句子的陈述句是这样的:
This armchair costs plenty ofmoney( e.g. over800 yuan,etc.)