【推荐1】No matter how hard I tried, I failed to work out the maths problem. (句型转换)
→________ hard I tried, I failed to work out the maths problem.

【推荐3】No matter how late he is, his mother will wait for him to have dinner together.
→_________he is, his mother will wait for him to have dinner together. (句型转换)

【推荐1】You could not solve the problem________(不管你多聪明). （根据汉语提示完成句子）

【推荐1】无论她多么努力，好像都无济于事。
_________she tried, nothing seemed to work.

【推荐2】no matter how引导的让步状语从句
[例句]However, no matter how different they may seem, all over the world, the spirit of sharing joy, gratitude, love, or peace is common in all festivals.
[仿写]________the difficulty is, they always make every effort to overcome it.
无论他们面对多大的困难，他们总是尽一切努力克服它。

【推荐3】No matter who will come, we’re sure to welcome warmly. (句型转换)
→__________ __________, we’re sure to welcome warmly.