你想知道「怎麼才能知道」咯吱痒痒用英語怎麼說的嗎？
根據2/8定律，80%以上的英語「學習者」靠「吃老師現成」「學」英語。「吃老師現成」就是，比如，要「學」「咯吱饒痒痒用英語怎麼說」？他們「腦子都不用動」，只會「等」老師給他們提供「現成答案」：英語的「咯吱人痒痒」的英語是。。。。。。
這是典型的「求魚」學習法。難怪有人說「英語怎麼學起來很費勁」：你已「迷失」在沒完沒了的英語「知識海洋」了，能不費勁？
只有20%不到的人從老師那裡「學會」了「用工具，用方法自己解決『怎麼說』問題」。結果，英語學習從此變得「無窮樂趣」。
這個「工具、方法」，或者說訓練出來的「能力」就是：只要你給我英文yahoo(或google)，我就能把它找出來。
其實，這和我們用「百度」查找資料是一個道理。
1) 我們不會「咯吱人痒痒」英語怎麼說呀！
2) 那麼，你是的英語「會」什麼？下面的英語「會說」嗎？
1. why can't people stand being touched at armpit
2. can't help laughing when being touched at armpit
這是我能想到的把英語「咯吱人」在yahoo上找出來的英語key words，你也可以有自己「想到」的英語，不一定跟我的完全一樣。
能儘可能「精確」的使用英語key words，這本身就已經是「英語夠棒的了」。
3) 在yahoo裡，我們從can't help laughing when being touched at armpit中yahoo到大量這樣的英語，現列舉一二：
1.Why Do We Laugh When We're Tickled? | Mental Floss
2.Why do people laugh when they get tickled? | HowStuffWorks
3.What does it mean to be ticklish? | Socratic
4.are you ticklish? where/what is the most ticklish part of ...
5. 我們隨便點開其中一篇英語：
Why do people laugh when they get tickled?
Humans clearly respond to touch, both physically and emotionally. Some areas on our bodies are more sensitive than others, however. Consider being touched by another person's finger lightly on the top of your thigh, a few inches above the knee. Not much of a reaction, is there? But imagine that same finger making its way slowly toward your ribcage, just above where it meets your underarm. Perhaps you've just drawn your arms closer to your sides to protect this sensitive area from being tickled by the hypothetical finger. Do you have a smile on your face? Are you giggling?
If so, don't be too surprised. Tickling and laughter (or a smile at the thought of tickling, perhaps) fit together like a hand in a glove. When we're tickled in the right circumstances and in certain areas, we can't help but to laugh. No, really -- laughter is an involuntary response to tickling
It's easy to take the connection between laughter and tickling for granted, but the truth is that this response to tickling is an odd one. This raises a question: What's the basis of the ticklish laughter response? First, we'll take a look at the physiology of tickling.
至此，一種用「方法」解決問題的充滿快樂學習的「咯吱人痒痒」英語怎麼說「任務」已經完成。下面可以做Put English into English口語訓練了。
4) Put English into English英語口語訓練
1. Okay.I know the English word/expression for 咯吱人痒痒 now.
2. We say to tickle someone for 咯吱人痒痒
3. For example, we say：
Why do people laugh when they get tickled?
4. For example,we say：
I'll giggle/laugh when I am tickled at my armpit
Yahoo is everything：探索，發現，求證，分享。