1)both,some,few,many等用作主语或修饰主语时,谓语动词用复数。
Bothofmyparentsareoverseventyyearsold.
Manystudentsinmyclasshavecreativethoughtsandwideknowledge.
2)"the+形容词"作主语,在表示一类人或事物时,谓语动词用复数。
Theagedarewelltakencareofbythegovernment.
Thepoorareoftenlookeddownuponbytherich.
TheyounghaverespectfortheoldinChina.
3)anumberof,alotof,anyof,mostof,therestof,someof,noneof,allof修饰复数名词时,谓语动词用复数。
Mostoftheteachersareresponsibleandknowledgeable.
Anumberofbookshavebeenpublishedonthesubject.
Noneofthebooksattractmealot.thenumberof表示"……的数量",谓语动词用单数。
Thenumberofbookspublishedonthissubjectissimplyamazing.
ThenumberofforeignvisitorstoChinahasbeenincreasingoverthelastseveralyears.
4)集合名词作主语时,当名词表示整体时,谓语动词用单数;当名词强调集体中的个体时,谓语动词用复数。
Thefamilyisthebasicunitofsociety.ThefamilyhaveagreedamongthemselvestospendtheirvocationinEurope.