Now, it is clear that the decline of a language must ultimately have political and economical causes: it is not due simply to the bad __1
influence of this or that individual writers. But an effect can become __2
a cause, reinforce the original cause and producing the same effect __3
in an intensified form, and so on indefinitely. A man may take drink __4
because he feels himself to be a failure, and then fail all the most __5
completely because he drinks. It is rather the same thing that is happening to the English language. It becomes ugly and inaccurate because our thoughts are foolish, but the sloven of our language __6
makes it easier for us to have foolish thoughts. The point is that the process is irreversible. Modern English, especially written English, __7
is full of bad habits which spread by imitation and which can be avoided if one is willing to take the necessary trouble. If one gets rid of these habits one can think more clearly, and think clearly is a __8
necessary first step towards political regeneration: so that the fight against bad English is not frivolous and is not the exclusive concerning __9
of professional writers. I will come back to this present, and I hope __10
that by that time the meaning of what I have said here will have become clearer.
this or that后面应接单数名词，因为从意思上来看应是二选一的，所以是单数。
“an effect can become a cause”和“reinforce the original cause”两个分句并不是并列的关系，应该说是主句和从句的关系，应该将reinforce变为-ing形式，这也与后面的“producing the same effect”保持形式上的一致。
take to 表示“养成习惯，沉湎于”。
all the more 表示“更加”，如：The living room is decorated in pale colors which make it all he more airy.
动词原形本身无法作主语，必须将它变成-ing形式或不定式，由于这里有将要发生的含义，所以选用不定式 to think。