vii. 让步状语从句.
让步状语从句通常although(though)(虽然),as(虽然),while(虽然),even if (though)(即使),however(不管怎样),whatever(不管,无论什么),no matter what(how, where, when)不管什么(怎样\哪里\何时),whether...or (不管…还是)等连词引导， 如:
he will not reveal the secret（秘密） though he knows（知道）it.
the galaxy（银河系）, vast（辽阔的） as it is , is only a small island（岛屿） in the endless（无止境的）universe.
while this is true of（对。。。适用） some, it is not true of all.
we’ll carry our experiment（实验） through（进行） no matter what obstacles（障碍） we should have in our way. 不管在我们道路上有什么障碍,我们一定要把试验进行到底.
however hard（努力地） you try, you won’t be able to （能够）do it alone（单独地）.
(不管…还是)whether you like（喜欢） it or not, you’ll have to （不得不）do it.