There be句型的主謂一致
當be后面的名詞是可數(shù)名詞單數(shù)或不可數(shù)名詞時，謂語用單數(shù)is(was)；當be后面的名詞是可數(shù)名詞復數(shù)時，謂語用復數(shù)are(were)。如：
There is a river at the foot of the hill.（山腳下有條小河。）
There are two watermelons under the desk.（桌子下有兩個西瓜。）
如果be后面是多個名詞并列，be應與靠近它的'名詞的數(shù)保持一致。如：
There is a river and many trees at the foot of the hill.（山腳下有一條小河和許多樹。）
There is a basketball and two watermelons under the desk.（桌子下有一個籃球、兩個西瓜。）