by no means 的用法可以總結如下：
語義：
by no means 表示 "絕不" 或 "絲毫不"。這個短語用於表達強烈的否定意義，意味著某種情況或條件完全不被接受或認可。
用法：
放在句首：當 by no means 放在句首時，通常需要使用部分倒裝，即把助動詞或情態動詞放到主語前面。例如：
By no means will I allow this to happen.
By no means should this remark be taken lightly.
放在句中或句末：如果句子結構不需要倒裝，by no means 可以放在句中或句末，以強調其否定意義。例如：
I will not allow this to happen, by no means.
This remark, by no means, should be taken lightly.
肯定句中的強烈否定：雖然 by no means 通常用於否定句中，但它也可以用在肯定句中，以表達強烈的否定情感。例如：
He is by no means a weak opponent.
相似表達：
與 by no means 相似的表達包括 absolutely not, certainly not, not at all, 和 definitely not。這些短語都用來表達強烈的否定意義。
例句：
By no means shall our country be drawn into yet another war overseas.
He is by no means a weak opponent.
This remark, by no means, should be taken lightly.
通過上述分析，我們可以看到 by no means 的用法多樣，但主要目的是為了表達強烈的否定意義。