is being come有这个结构吗 it’s more important （learn）English well than before,写原因

只有is coming, come 这个字连被动态都没有. 第二句 It is more important to learn English well than before. to learn 不能省略我找的答案上面写的是to learn还有is being come没有 is being come 这种写法，is being done（被动）倒是见过，主要是come没有被动的用法