兩者的區別：even though的意思是即使；儘管；縱然，在兩個從句或句子之間可用此詞表示對比。even though多用於口語，可用於句首或帶有動詞的從句開頭；even so意思是即便如此；儘管這樣，在句中相當於插入語，可以省掉，放於句中時，even so的前後都要有逗號，將它和句子隔開。
even so例句：
Even so，things don't always go as planned。即便如此，事情也並不總會按照計劃發展。
It has many omissions，even so，it is quite a useful reference book。那本書有許多遺漏之處，即使如此，尚不失為一本有用的參考書。
Even so，some progress has been made。即便如此，還是取得了一些成就。
even though例句：
I will have a try even though I should fail。哪怕失敗，我也要試一下。
His mind was clear even though he was very ill。儘管病得很厲害，但他頭腦仍很清楚。
Even though he was getting angry，his voice remained level。即使他非常生氣，他的聲音仍保持穩定。
