考研英語的語法速成：謂語動詞用單數的情況
1.動名詞短語、不定式短語、名詞性從句做主語，謂語用單數。如：
Buying clothes is often a time-consuming job because those clothes that a person likes are rarely the cones that fit him or her.
To understand the situation completely requires more thought than has been given thus far.
2.表示時間、距離、金額、重量、面積、體積、容積等度量的名詞短語做主語時，謂語用單數。
Two weeks was too long
Five times five makes twenty five
3.一般用and連接的兩個單詞或短語做主語時候，謂語用復數，但是下面用and連接的主語表示一個概念，謂語用單數：
law and order 法制 soap and water 肥皂水
a cup and saucer 茶杯碟子 fork and knife 刀叉
the needle and thread 針線 trial and error 反復嘗試，不斷摸索
horse and carriage 馬車 time and tide 歲月
bread and butter 奶油面包 the ebb and flow 盛衰，潮漲潮落
如： If law and order not preserved, neither the citizen nor his property is safe.
A. is B. are C. was d. were
答案：A。
4.表示學科和某些疾病名稱的名詞是復數形式，作主語時候謂語動詞用單數形式
Linguistics is a branch of study on human language.
5.有些名詞形式上是復數，意義上是單數，根據意義一致原則動詞用單數
The chaos was stopped by the police
The news is a great encouragement to us
A series of debates between the lectures was scheduled for the next weekend.
6.用and 連接的成份表示一個單一概念時候，動詞謂語用單數形式
Bread and butter is our daily food
Time and tide waits for no man
1.動名詞短語、不定式短語、名詞性從句做主語，謂語用單數。如：
Buying clothes is often a time-consuming job because those clothes that a person likes are rarely the cones that fit him or her.
To understand the situation completely requires more thought than has been given thus far.
2.表示時間、距離、金額、重量、面積、體積、容積等度量的名詞短語做主語時，謂語用單數。
Two weeks was too long
Five times five makes twenty five
3.一般用and連接的兩個單詞或短語做主語時候，謂語用復數，但是下面用and連接的主語表示一個概念，謂語用單數：
law and order 法制 soap and water 肥皂水
a cup and saucer 茶杯碟子 fork and knife 刀叉
the needle and thread 針線 trial and error 反復嘗試，不斷摸索
horse and carriage 馬車 time and tide 歲月
bread and butter 奶油面包 the ebb and flow 盛衰，潮漲潮落
如： If law and order not preserved, neither the citizen nor his property is safe.
A. is B. are C. was d. were
答案：A。
4.表示學科和某些疾病名稱的名詞是復數形式，作主語時候謂語動詞用單數形式
Linguistics is a branch of study on human language.
5.有些名詞形式上是復數，意義上是單數，根據意義一致原則動詞用單數
The chaos was stopped by the police
The news is a great encouragement to us
A series of debates between the lectures was scheduled for the next weekend.
6.用and 連接的成份表示一個單一概念時候，動詞謂語用單數形式
Bread and butter is our daily food
Time and tide waits for no man
