Three added to four makes seven 中add为什么加ed啊The bad weather added to our difficulties 还有这个

one added to three is four中added to three 在句子中充当什么成分?顺便说一下为什么用added, Five added to four make Three added to four makes seven 中add为什么加ed啊The bad weather added to our difficulties 还有这个 Three added to four makes seven 中add为什么加ed?而且被动语态不是应该要有be动词吗? 这句话对吗?Two added to three equals five． Two added to three five中add可以换为added吗? two added to three equals five中,为什么用added而不用adds? three-to-four是什么意思如题 three-to-four-week汉语意思 twelve is to three what four is to one four is to six what two is to three What were you doing from three to four yesterday afternoon? he uaually spend at l_____ three to four months onit three o'clock to four in the morning · take three to four tablets daily什么意思 three added to seven makes ten为什么要用added,为什么加ed如果是被动的话，为什么不加be动词呢 Added to our Two added to three is five.为什么add要加ed 又为什么要加to?Two added to three is five.为什么add要加ed 又为什么要加to?