Though you didn't do enough research... anyway it is just a simple question for me.
I guess you just set the system language to Chinese and it is solved.
Yes, without 都, you can say "我会说英语和汉语" The reason is unlike the English word "both" which is placed before the objects, "都" must be placed after the objects
I can speak [English and Chinese]
I can speak [both] [English and Chinese]
Notice in #4 and #5 the object [英语和汉语] is placed before 都
"我会[都]说 [英语和汉语]" and "我会说[...
From what I've learnt in a University Intro Chinese Linguistic course. We are taught the third tone is pronounced as follows in a scale of 1-5 with 1 being lowest pitch:
Character on its own or last: 214 (水214)
Character before another character: 21 (水21 份51)
Before another third tone: 35 (水35 果214)
From the short amount of research that I did in the past hour, I managed to trace back to a news article from 2006 which said the origin was from a Old Taiwanese man that went back to China to visit his relatives twenty years ago and he said the words "親不見，產不生，廠空空，愛無心" after visiting and noticing the changes in Chinese characters. (edit: forgot about the ...