to understand the problem is very difficult.(用it作为形式主语）—— ——very difficult____ underst

相关推荐

• to understand the problem is very difficult.(用it作为形式主语）—— ——very difficult____ underst
• They heard a message from a spacecraft.（用just改现在完成时） They ___ just ___ a message from a sThey heard a message from a spacecraft.（用just改现在完成时） They ___ just ___ a message from a spacecraft.Have you got a letter from Lucy?（改同义句）Have you ____ ____ Lucy?To understand the problem is very difficult.（用it作形式主语）_____ _____ very difficult ____ understand the problem.I came here two days ago.（改同义句）I ____ ____ here _____ two days.Her mother has been to HongKong (
• to understand the problem is very difficult.(用it作为形式主语）—— ——very difficult____ underst
• to understand the problem is very difficult .（改同义句）（　）（　）very　difficult　（　）understand　the　problem
• this is the problem very difficult to solveThis is the problem very difficult to solve.请问这句话的语法结构是什么呢?系动词引导的表语从句,那very difficult to solve充当什么成份?是不是相当于This is the problem which is difficult to solve.那哪些定语从句可以省略先行词？不是说在定语从句中,先行词在从句中做宾语,那么关系代词可以省略。