It is obvious that proceting environment is our compulsory duty and also a legal behavior.
(2) 定从句，这个是写作需要重点掌握的句式。
It goes without saying that the cartoon depicts four persons are competitively playing a footable game, which successfully captures our eyes.
(3)双重否定：
…hardly…not/ never
never fail to do
it is not impossible to
(4) 倒装结构：
Only+状语置于句首：Only in this way can we resolve the problem.
否定词置于句首：By no means should we turn a blind eye to such things of spoiling children.
(5) 强调句：
强调动词：I do expect that the issue of environment pollution can be settled as soon as possible.
强调句子某个成分：It was persistence and optimism that made Thomas Edison bravely confront a variety of obtacles and other failures and then finally invent the electrical lamp.
