She has a funny way to tell us how to correct mistakes in a language class. It's always useful to learn about other teaching experiences so we can be mindful of them in our current or future language lessons
Lexical Errors
Those girls look very high wearing those shoes
The weather is raining
That's very wonderful
They are related to the mistakes the learners make when choosing a way so they can express a meaning
Pronunciation
Their difficultly to pronunce the plural of test: "tests". Most Mexican learners, for instance, cannot pronounce the letter "s" after the "t".
The show was great (some learners pronounce "sh" as if it was "ch")
Certain homophones such as: maid-made, cereal-serial, knot-not, weather-whether.
At age 25, being already graduated from International Relations and simultaneously studying three BA's and a Master, I am honestly not very knowledgeable in teaching, yet I'm driven by my charm, instinct and creativity, so when I have taught French, Italian, German, English and Latin (for Medicine and Law students), I have noticed that most beginner students of ESL cannot pronounce the letter L before the K (verbs, like, walk, talk) and things like that.
r
It's very common to see these types of mistakes in pronunciation, but honestly I find English pronunciation very easy, compared to French or German. In spite of that, I consider myself to be ultra careful when correcting pronunciation and emphasizing in accent reduction simply because strong accents are just unprofessional.
Grammar errors
Do you want that I do it ?
He don't gave me nothing
"She is the better student in class".
r
These type of errors are very common for beginners but even advanced students may still struggle on this. This might be seen as a positive challenge, whereas the professor has the opportunity to correct them on time, so that the learners don't have to deal with them in their communication forever.