Tom can speak French. So can Jack. 汤姆会讲法语，杰克也会。
If you won't go， neither will I.你不去，我也不去。
典型例题
——Do you know Jim quarrelled with his brother?
——I don't know， _____.
A. nor don't I care B. nor do I care C. I don't care neither D. I don't care also
答案：B. nor为增补意思"也不关心"，因此句子应倒装。A错在用 don't 再次否定，C neither 用法不对且缺乏连词。D缺乏连词。
注意：当so引出的句子用以对上文内容加以证实或肯定时，不可用倒装结构。意为"的确如此".例如：
Tom asked me to go to play football and so I did. 汤姆邀我去踢球，我去了。
——It's raining hard.——So it is. 雨下得真大。是呀。