_______myself as an example, I changed my major when I became a postgraduate.
这个空应该填take还是taking，为何？能否填totake?
_______ myself as an example, I changed my major when I became apostgraduate.
空格处应填Take，一般不会用 Taking 或 To take。即：
Take myself as an example, I changed my major when I became apostgraduate.
如此用的 Take myself as an example 为插入语，像 Believe it ornot 之类使用方法（英语不说：Believing it ornot 或 To believe it ornot）。
你可能觉得这里填目前分词Taking 也可以，由于这里的 taking 的逻辑主语刚好也是后面句子的主语（I），但这只不过巧合，假若主语不同呢？譬如：
_______ myself as an example, Englishis too difficult for me.
这个句子也要填 Take，此时你就不会想到要填Taking 了吧！
大家以 Believe it or not（信不信由你）为例（不管句子主语是什么，believe都没变化）：
That’s normal, believe it or not. 那非常正常，信不信由你。
Believe it or not, he asked me tomarry him! 信不信由你，他向我求婚了！
We were, believe it or not, in lovewith each other. 信不信由你，大家在相爱。
Believe it or not, I don’t actuallydislike him. 信不信由你，我其实并不讨厌他。
Believe it or not, English food cansometimes be quite good. 不管你相信不相信，英国的饭菜有时也相当好。
Believe it or not, we were leftwaiting in the rain for two hours. 信不信由你，大家冒雨一直等了两个小时。
Believe it or not, all the passengerscame through the plane crash alive. 每不信由你，所有些乘客在飞机失亊将来还都活着。
Believe it or not, I've just won 1000pounds in a competition! 信不信由你，我刚在比赛中廉得了1000英镑的奖金！
