初中英语a lot of = lots of 是什么词? 词性是副词还是动词还是名次?

初中英语a lot of = lots of 是什么词? 词性是副词还是动词还是名次? 是a lot of exercises ,还是lots of exercise?为什么?lots of和a lot of a lot of 和lots of接不可数名词时,谓语动词用单数还是复数? 是lot of rules还是lots of rules lots of food 还是lot of food people这个词,如果要表示“很多”是应该用a lot of还是lots of? 是lots of water 还是a lots of water a lot of 、lots of、lot of 后面加单数名词还是复数? 英语翻译另外,相当于a lot of/lots of和many的是a large number of还是a number “多次” 是什么词性?副词还是动词? “反复”是什么词性?副词还是动词? a lot of 前加is还是are /lots of 前加 is 还是are