为什么a lot of fruit fruit不加s而many fruits 加s

为什么a lot of fruit fruit不加s而many fruits 加s we should eat a lot of fruit there is a lot of fruit还是there are a lot of fruit These children eat a lot of fruit.（lot of fruit划线提问） please eat a lot of fruit and (vegetable or vegetable)为什么? There are a lot of ( ) in the box.()里写fish还是fruit?为什么? a lot of fruit为什么不加s many fruits却加s I eat a lot of f___ fruit every day. a lot of fruit helps you to k___in good health. I've got a lot of fruit on he uesd to -------,but now he eats a lot of fruit and vegetables A,so many candies B,a lot of candy该选哪个答案呢,为什么? I eat_____(A LOT OF)fruit and exercise______(A LOT OF). they eat a lot of __and__,but a little__( ) A fruit;vegetables;meat B fruits；A fruit;vegetables;meat B fruits;vegetables;meatsc fruit;vegetable;meat Dfruit;vegetable;meats附带为什么， 为什么there is a lot of fruit on a small table.用is而there are all kinds of food on a big table.用are?fruit,food 不都是不可数?为什么一个用is,一个用are? eating＿fruit and vegetable can keep you healthy A much B a lot C lot of D lots of There are a lot of ____the fruit tree.A.leaves onB.leaves inC.lesfs onD.leafs in(选什么,为什么这样选) It is good for us ______ every day.A、to eat lots of fruit B、eat lots of fruitC、eating a lot of fruit D、to eat lot of fruit Eating a lot of vegetables and fruit ( ) good for your healthy.A.is B .are