几个英语问题，~

agree on
对某事〔物〕有同样看法, 商定〔同意〕某事, 商定做某事
eg.We agree on the question.
我们在这个问题上意见一致
agree upon
对某事〔物〕有同样看法, 商定〔同意〕某事, 商定做某事
eg.As soon as the details had been agreed upon, the results would be proclaimed.
一旦细节问题取得一致意见, 结果将予以公布。
add up

加起来, 总计
At the exits polite assistants will take the goods and add up the cost.
在出口处, 客气的服务员把你的商品接过去, 把价钱加在一起。
与应有的数量相符
The numbers wouldn't add up.
这些数目加起来与总数不符。
〈口〉合乎情理
The little things we do add up.
我们做的每一件小事都合情合理。

add up to
总计达, 总共是
The money adds up to ?100.
这笔钱总计达100美元。
〈口〉等于; 意味着, 看来实际是…; 总起来说
All this adds up to a new concept of the universe.
所有这些意味着对宇宙的一个新概念

agree on/upon 一样的吧~?

add up
vt. 合计达(总而言之,加起来,合计)
例句:
His story just doesn't add up he must be lying.
他说的前后不一致--一定撒谎了.
Let's add up the pros and cons.
咱们把正反两方面的意见总结一下吧.
You'll have to go over