1.動(dòng)名詞短語、不定式短語、名詞性從句做主語，謂語用單數(shù)。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(shí)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(shí)，謂語用單數(shù)。

　　Two weeks was too long

　　Five times five makes twenty five

　　3.一般用and連接的兩個(gè)單詞或短語做主語時(shí)候，謂語用復(fù)數(shù)，但是下面用and連接的主語表示一個(gè)概念，謂語用單數(shù)：

　　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(fù)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(xué)科和某些疾病名稱的名詞是復(fù)數(shù)形式，作主語時(shí)候謂語動(dòng)詞用單數(shù)形式

　　Linguistics is a branch of study on human language.

　　5.有些名詞形式上是復(fù)數(shù)，意義上是單數(shù)，根據(jù)意義一致原則動(dòng)詞用單數(shù)

　　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(gè)單一概念時(shí)候，動(dòng)詞謂語用單數(shù)形式

　　Bread and butter is our daily food

　　Time and tide waits for no man

　　1.動(dòng)名詞短語、不定式短語、名詞性從句做主語，謂語用單數(shù)。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(shí)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(shí)，謂語用單數(shù)。

　　Two weeks was too long

　　Five times five makes twenty five

　　3.一般用and連接的兩個(gè)單詞或短語做主語時(shí)候，謂語用復(fù)數(shù)，但是下面用and連接的主語表示一個(gè)概念，謂語用單數(shù)：

　　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(fù)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(xué)科和某些疾病名稱的名詞是復(fù)數(shù)形式，作主語時(shí)候謂語動(dòng)詞用單數(shù)形式

　　Linguistics is a branch of study on human language.

　　5.有些名詞形式上是復(fù)數(shù)，意義上是單數(shù)，根據(jù)意義一致原則動(dòng)詞用單數(shù)

　　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(gè)單一概念時(shí)候，動(dòng)詞謂語用單數(shù)形式

　　Bread and butter is our daily food

　　Time and tide waits for no man