检查下面的文章是否存在语法错误I-turned-around-and-found-my-dad-was-not-behind-I-was-literally-shocked-for-thatWhat-was-worseI-was-covered-with-scar-after-falling-off-the-bicycleBewildered-by-that-I-subsequently-asked-dad-why-he-left-me-aloneUpon-hearing-my-wordsdad

There are a few grammar errors in the article which need to be corrected. The corrected passage is as follows:

"I turned around and found that my dad was not behind me. I was literally shocked by this. What was worse, I was covered with scars after falling off my bicycle. Bewildered by this, I subsequently asked my dad why he left me alone. Upon hearing my words, my dad replied to me in a humorous tone, 'You know, it's impossible for me to always hold the seat to help you cycle through life.' Therefore, I made up my mind to do it by myself."