下列句子怎么变成名词性短语

Export Tax Rebate is an essential method for China's Macroeconomic control.
Export Tax Rebate is the basis of China's foreign trade development
Export Tax Rebate is the unshakeable backing for China's foreign trade revolution

楼主你好！要把主系表结构的句子改成名词性短语，一般有两种改法：
 
1. 将系动词和表语改成同位语：
(1)Export Tax Rebate is an essential method for China's Macroeconomic control.
改成Export Tax Rebate, an essential method for China's Macroeconomic control,...
(2)Export Tax Rebate is the basis of China's foreign trade development.
改成Export Tax Rebate, the basis of China's foreign trade development,...
(3)Export Tax Rebate is the unshakeable backing for China's foreign trade revolution.
改成Export Tax Rebate, the unshakeable backing for China's foreign trade revolution,...
 
2. 将系动词和表语部分用定语从句替代：
(1)Export Tax Rebate is an essential method for China's Macroeconomic control.
改成Export Tax Rebate, which is an essential method for China's Macroeconomic control,...
(2)Export Tax Rebate is the basis of China's foreign trade development.
改成Export Tax Rebate, which is the basis of China's foreign trade development,...
(3)Export Tax Rebate is the unshakeable backing for China's foreign trade revolution.
改成Export Tax Rebate, which is the unshakeable backing for China's foreign trade revolution,...

有疑问欢迎追问，满意的话请采纳，谢谢！