在英語當中有三大類系動詞：
1. “存在”類: 表示存在或具有某種特徵或狀態.這類連繫動詞強調“存在”.常見的有: be(是),look(看起來),feel(摸上去),seem(似乎是),appear(似乎、顯得),prove(證明是),smell(聞起來),taste(嚐起來),sound(聽起來)等.例如:
The story sounds true.
Those oranges taste good.
2. “持續”類: 表示某種情況或狀態的持續.這類連繫動詞強調“持續”.常見的有: remain(依然),keep(保持),stay(保持),continue(繼續、仍舊),stand(處於某狀況或情形)等.例如:
—Why don't you put the meat in the fridge?
—It will stay fresh for several days.
It's already ten in the morning. The store remains closed. What's the matter?
3. “變化”類: 表示由一種情況或狀態變化成另一種情況或狀態.這類連繫動詞強調"變化"後的情況或狀態.常見的有: become(變成), turn(變成), grow(變得), go(變得)等.例如:
Put the fish in the fridge, or it will go bad in hot weather.
連繫動詞使用要點：
1. 有些連繫動詞通常不用於被動語態和進行時態中.如:feel,taste等詞.例如:
-Do you like the material?
-Yes, it feels very soft.
2. 一般情況下,連繫動詞主要跟形容詞或分詞作表語.例如:
Be careful when you cross this very busy street. If not, you may get run over by a car.
3. 能跟名詞作表語的連繫動詞常見的有:be, become, appear, seem, prove, remain和turn等.注意:turn後跟(表示主語身份的)名詞作表語時,不加冠詞.例如:
Twenty years later, he turned teacher.
The population growth in China remains a problem.
4. 連繫動詞也可跟不定式(to do / to be),常見的有: appear, seem, remain, prove, look等.
例如:
Having a trip abroad is certainly good for the old couple, but it remains to be seen whether they will enjoy it.
On the long journey, Peter proved to be a most interesting guide. We all had a wonderful time