形容詞
形容詞用途：形容主體是什么樣的，主體是名詞，在句子的成份既可以做名詞前的修飾，可以做表語，在系動詞后修飾。
形容詞可以放在名詞前，如a beatiful dress；
在名詞前面時，多個形容詞不需要and，如a big red apple（一個又大又紅的蘋果）
名詞前面形容詞的次序：[其它形容詞] [國家的][材料的] 名詞;
注意：形容詞沒有復數形式。如果一個詞有復數形式，那這個詞要么是名詞，如果后面加s那可能是動詞的第三人稱形式。
形容詞也可以放在名詞后，但必須接在動詞后面，動詞有be/look/feel/seem/taste/appear/taste；
放在名詞后面，接多個形容詞時，要用and連接，例：This phone is thin and light.
形容詞比較形式
一、普通形容詞在詞尾后變成er來變成比較級形容詞：
1.直接加er；smaller、faster、cheaper、shorter、
2.以e結尾直接加r；nicer、later、winder、larger
3.重復詞尾字母+er；如：bigger、hotter、thinner、
4.以y結尾變y為i+er；如easier、drier、luckier、friendlier、
二、多個音節以上直接加more形成比較級；如more expensive、more modern
使用：
1.比較級+than+賓語代詞，如：Tony is taller than her.
2.比較級+than+主語代詞+be動詞；如：Tony is taller than she is. # than 是介詞嗎？
3.not as+形容詞+as 賓語，如Leading is not as easy as management. It is not as heavy as I thought it would be.
以下句子是相同的意思：
Leading is not as easy as management. （管理比領導容易）
Management is easier than Leading.
4.too+形容詞，This coffee is too sweet (sweeter than I want)
- 比較too and very:
It's very hot today.(This is a fact.)
It's too hot today.(It's hotter than I want.)
- too 和 enough的比較：
too+形容詞+to do sth. He is too young to drive.
not+形容詞+enough+to do sth. He is not old enough to drive.
- A 謂 +the same+noun(+as) B： A和B相同. He has the same age as she.
修飾比較級程度詞
增加比較極程度的詞： a lot、 much
例：He looks a lot older than his wife. He looks much older than his wife減少比較級程度的詞： a little、 a bit
例： The climate in New Zealand was a bit nicer than we had expected.
副詞
副詞修改除名詞之外的詞，表示怎樣、何時、在哪做。
副詞的形式（記住常用的即可）在詞典中有有adv的詞都是副詞。
常見有些是形容詞加ly，如loudly, hourly；
以y結尾則要變y為ily，如easily, happily;
也有不規則的形式，如fast。
注意不是以ly結尾都是副詞，如friendly，lovely, silly 和 lonely.
副詞在句子中的位置
1.一般副詞放在動詞后面，如果動詞接賓后面，則放在賓語后面。
例：
I can sleep quickly.
He does the dishes carelessly.
A stream flowed gently down into the valley.
2.頻率副詞在句子中的位置：放在be動詞/助動詞/情態動詞之后，在一般動詞之前。
頻率副詞：always(100%) usually(90%) generally(80%) often(70%) sometimes(50%) occassionally(30%) seldom(10%) rarely(5%) never(0%)
放在一般動詞之前：He usually learn English after lunch.
放在Be動詞之后： He is sometimes late for work.
放情態動詞之后：He will never waste his time.
備注：
助動詞，也叫輔助動詞，不能單獨做謂語。
基本助動詞只有三個：be， do， have， 它們沒有詞匯意義，只有語法作用，如協助構成進行體，完成體，被動態，否定句，疑問句等。
情態助動詞，有詞性意義，情態動詞接動詞原型；情態助動詞有can(could), shall(should), may(might), will(would), must, need not, ought to, used to, dare, had better,
增加形容詞或副詞程度的詞
增加程度：very, really, extremely
We did very well.
We did really well.
We didd extremely well.減少程度：fairly, quite
We did fairly well but only fairly well.
Well, actually it requires quite a bit of work and research.
參考資料：English Grammar App.
