图：两块牛肉.那beef后面（结尾）是加s吗?还是写two kilos of beef?

图：两块牛肉.那beef后面（结尾）是加s吗?还是写two kilos of beef? There are two kilos of beef on the plate.(对two kilos of beef 这有几块牛肉　there are pieces of beef beef 要不要加s we need to buy （two kilos of）beef .（根据划线句子提问） how ( )kilos of beef( )there in the fridge?是用much 还是many,用is I want to order nine kilos of beef.(对划线部分提问）nine kilos是划线部分 beef 加S是怎么回事? What can i do for you?L'd like----- A.two kilos of beef B.a Ground Beef是什么牛肉 beef (牛肉)怎么读? beef two kilos of salt 后面跟are 还是is?