a lot of和lots of可不可以用于肯定句?

lots of和a lot of可以用于一般疑问句和否定句吗? a lot of 和 lots of a lot of和lots of 有些地方说many ,much用于肯定,a lot of用于否定和疑问句 是a lot of exercises ,还是lots of exercise?为什么?lots of和a lot of a lot of / lots of a lot 和 a lots of 和 lot of 和 lots of 的关系 many与much和lots of ,a lot of 的区别哪一类是可以用于否定句的呢,老师讲过的,忘干净了 a lot和 lots of的用法 a lot of用于什么句? a lot of和plenty of lots of的区别 lot of；lots of；a lot；a lots；a lots of；a lot of的区别