it seems as if it__ spring already

我知道虚拟 用过去时 - 那你就误解了
be 动词，虚拟 的用法 只有一个 were, 不是普遍的“过去式“
if I were ..
if he were ..
if she were ..
if it were ....
致以为甚麽， 那就要问专家了

虚拟语气

虚拟 在这里只能用were

虚拟语气时，只能用were,不能用is或was，这是规定。

It seems as if it is spring already .
似乎春天已经来了。
-- 英汉 - 翻译样例 - 口语
It seems as if it were autumn.
现在仿佛是秋天似的。
-- 英汉 - 短句参考
It seems as if human agency could affect this colossal power.
真好象人力能够左右这庞大无比的力量似的。
-- 英汉 - 辞典例句
It seems as if that had happened only yesterday.
那事彷佛是昨天刚发生似的。
-- 英汉 - 辞典例句
He gives the impression of being a hard worker/that he works hard, ie It seems as if he works hard.
他给人的印象是工作很努力.