Quentina Chan May 5, 2015:

could be a typo Sometimes it is a typo. If I remember correctly, on the (pc or laptop's) keyboard bought in Uk and European countries, the exclamation mark and figure 1 are sharing the same button (press shift+1 to get the "!"). I personally did the typo when I type in a very fast speed.

if so, "因为前面去跑步了1" could actually be "因为前面去跑步了!"

Wilman (asker) Apr 27, 2015:

Then why is there a "1" in this sentence?
因为前面去跑步了1