三人行，必有我师(焉)

语法
竟然/居然 “surprisingly, unexpectedly"
https://mandarinbean.com/jingran-vs-juran/
https://resources.allsetlearning.com/chinese/grammar/Expressing_the_unexpected_with_%22jingran%22

词汇
没用, useless (pinyin in tags)
https://mandarinbean.com/new-hsk-3-word-list/

Guardian:
你竟然又失败了, I'm surprised to find you have failed again
这儿居然有电话亭啊, who would have thought there was a phone booth here
我是不是真的特别没用, am I really especially useless?

Me:
他13岁的时候身高竟然长大了10厘米。
没有一本没用的书。

语法
condition + （要）不然 + result "X, otherwise Y" (part b; why is this listed under 除非 again...?)
https://resources.allsetlearning.com/chinese/grammar/Expressing_%22unless%22_with_%22chufei%22

词汇
使用, use (pinyin in tags)
https://mandarinbean.com/new-hsk-2-word-list/

Guardian:
看来赵处长是有眉目了，要不然哪有时间到我们学校来参观, it seems you have something in mind, Chief Zhao, otherwise how would you have the time to come and observe our school?
我已经明确地告诉过你不要过多地接近圣器，要不然黑能量它会, I have already clearly told you not to approach the Hallows too closely, otherwise the dark energy will--
赵处长，我跟你说过，不要过多地使用圣器, Chief Zhao, I have told you not to use the Hallows too much (Shen Wei making the same point in two different personas with two different grammar points)

Me:
咱们最好不要多聊，要不然我会错过火车。
你会不会使用这个工具？

语法
event + 时, "when ~~"
https://resources.allsetlearning.com/chinese/grammar/Expressing_%22when%22_with_%22shi%22

词汇
用, use; also 不用, no need, and 有用, useful ( pinyin )
https://mandarinbean.com/new-hsk-1-word-list/

Introductory grammar, day 94

Guardian:
那个人在正常形态时，就进行了一定的伪装呢, that person is hiding something when they're in their normal state
你以后就不用再害怕了, you won't need to be scared again after this
现在看来直觉有时候还是挺有用的, seems right now like instinct can be quite useful sometimes.

Me:
跟人家说中文时，我经常很容易紧张。
你们用什么网站学中文？