Is there a lot of furniture?后面有a lot of前面为什么要用be动词单数is而不用复数a

Is there a lot of furniture?后面有a lot of前面为什么要用be动词单数is而不用复数a there's a lot of things为什么用there is单数不用there are? there be后面跟 a lot of+可数名词时,be动词用is还是are? a lot of(lots of)、plenty of后面用了不可数,前面的be动词用的是is吗 a lot of前面用threre is还是there are there is a lot of there be句型后面如果加a lot of,那be用is还是用are there are a lot of/There is a lot of? there is a lot of traffic and pollution.为什么用is不用are a lot of news前 的There be 句型用单数还是用复数 急 a lot of 后面加名词单数复数的区别 There is a lot of s后面加什么