連系動詞本身有一定的詞義,但不能獨立作謂語,必須與表語一起構(gòu)成謂語.
一、 連系動詞的類型有：
1."存在"類:表示存在或具有某種特征或狀態(tài).這類連系動詞強調(diào)"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(嘗起來),sound(聽起來)等.例如:
The story sounds true.
Those oranges taste good star.
2."持續(xù)"類:表示某種情況或狀態(tài)的持續(xù).這類連系動詞強調(diào)"持續(xù)".常見的有:remain(依然),keep(保持),stay(保持),continue(繼續(xù)、仍舊),stand(處于某狀況或情形)等.例如:
Why don't you put the meat in the fridge?It will stay fresh for several days.
3."變化"類:表示由一種情況或狀態(tài)變化成另一種情況或狀態(tài).這類連系動詞強調(diào)"變化"后的情況或狀態(tài).常見的有:become(變成),turn(變成),grow(變得),get(變得)等.例如:
Put the fish in the fridge,or it will go bad in hot weather.
二、注意事項
1.有些連系動詞通常不用于被動語態(tài)和進行時態(tài)中.如:feel,taste等詞.例如:
-Yes,it feels very soft.
2.一般情況下,連系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系動詞常見的有:be,become,appear,seem,prove,remain和turn等.注意:turn后跟(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.連系動詞也可跟不定式(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.
表語是用來說明主語的身份、性質(zhì)、品性、特征和狀態(tài)的,表語常由名詞、形容詞、副詞、介詞短語、不定式、動詞的-ing、從句來充當(dāng),它常位于連系動詞（be,become,appear,seem等）之后.
例子:Africa is a big continent.
非洲是個大洲.