1.It's high time that something were done upon it.为什么是用were?

1.It's high time that something were done upon it.为什么是用were?
因为It's high time that +从句,从句是要用虚拟语气的,这是固定用法!
主句是一般现在时,从句虚拟就要向前推一个时态,那就是一般过去时!
2.Merchants smilingly swear that the products they sell are of high quality ,genuine instead of false.#genuine是形容词怎么能用在句末作状语呢?
形容词作状语用时,一般用逗号将其与句子的其余部分隔开.这种状语可位于句首、句末或句中.它在意义上相当于一个状语从句,具有以下语义和特征.
3.Finally,for students themselves ,they can ,through other ways ,make them be interested in word spelling.这句话是写错了吗?如果错了怎么纠正,正确的话,帮我句子成分分析一下.
这句话是没有问题的,这里面有两个插入语for students themselves,对学生自己来说,through other ways 通过其他方式,
整个句子的主谓是they can make them be interested in word spelling.
分析句子首先要找到主谓宾,其他的再进行分析
希望我的回答对你有所帮助!