Unit 1Friendship重点单词1.add add up add up to add to add A to B观察思考1). Please add up these numbers and see how much they add up to. 45+62+48=1552). Will you add more sugar to the coffee ?合计，加起来总计达，总共有增添，增加给加上;往添加3). The flowers add to the beauty of our school.Add up to 一般不用于被动语态，add up 如果是代词作宾语应该将其放在add 和up之间。即学即用His returning home safe and sound _her pleasure(使她倍感欢喜).His whole school education_ only one year.We have planted flowers and green trees around the buildings, which_ the beauty of the cit
