我没听说过 even though不能连接句子。
even though
used to emphasize that something is true although something else has happened or is true
Even though he's 24 now, he's still like a little child. I can still remember, even though it was so long ago.
而且even though大多数情况下连接句子，想 even是adv. though是conj. even修饰though | 
