25. not…any longer (=no
longer) 和not…any more （= no more）,“不再”：
(1) no longer和not…any longer侧重时间；
(2) not…any more和no more侧重程度和数量。
e.g. He no longer lives here.
= He doesn’t live here any longer.
You can drink no more.
= You can’t drink any more.
26. wood，woods与wooden的辨析：
(1) wood为不可数名词，意为“木头”；
(2) woods为名词，意为“森林”；
(3) wooden为wood的形容词，意为“木制的”。
e.g. There is much wood in the countryside.
I like woods, because the air is fresh.
These desks are wooden.
27. divide与separate的辨析:
(1) divide指把一个整体分成几部分，也含有自然划分的意思，常与介词into搭配;
(2) separate指把原来连在一起或混在一起的东西人为地分开，也可用作不及物动词，意为“分(离)开，脱离，分手”。常与介词from连用。
e.g. The brothers divided the apple into two parts.
I got separated from my friends after going out of the cinema.
Many families got separated during the war.
At this point, the satellite separates from its launcher
David and I have been separated for six months and we have been sleeping in separate bedrooms.
28. 含有set的短语辨析：
(1) set out “出发;开始;陈述”；
(2) set about sth.／doing sth. “着手做某事”；
(3)set off “动身，出发; 燃放（鞭炮等），使……爆炸或发出响声”；
(4)set up “竖起来，支起来；建立，成立”；
(5)set aside “放在一边，搁置；存蓄，留下”。
e.g. They set out as the sunwas rising.
The professor sets out his ideas clearly in his article.
We set about our task at once with great enthusiasm.
After we had finished eating, he proposed to set off immediately.
The school has set up a special class to help slow students.
My parents set aside a bit of money every month.
