比较级和最高级
　　无比较级和最高级的形容词及副词: complete, perfect, utter, etc
　　比较从句
　　as…as, almost/just/nearly as…as, not so/as …as:
　　We’ll give you as much help as we can.
　　I haven’t made as much progress as I should.
　　We’ve produced twice as much cotton this year as we did ten years ago.
　　My command of English is not half so (as) good as yours.
　　than, so much/a lot more than, no more… than, not more…than, less than
　　more…than, less…than可表示“与其说…不如说…”:
　　He is more good than bad.
　　He was less hurt than frightened.
　　The present crisis in capitalist countries is much more a political than an economic crisis.
　　“no + 形容词或副词比较级 + than”所表示的可以是该形容词或副词的相反的含义:
　　no rich than = as poor as
　　no bigger than = as small as
　　no later than = as early as
　　John is no better than Tom.
　　I have taken no more than six courses this semester.
　　the more… the more (越是…就越…)
　　Actually, the busier he is, the happier he feels.
　　The more they talked, the more encouraged they felt.
　　more of a, as much of a, less of a, etc: 当as much of a…as, more/less of a …than等结构与单数可数名词搭配时, 名词只能置于比较结构中间.
　　He is more of a sportsman than his brother.