In English language we need to work on our thought process, fluency is other part, a good speaker always shows his/her fluency of thought and fluency of speech. to be a perfect with spoken English we need to work on our fluency and thought process. Grammar  is somehow secondary in it. Like rules can be learnt but fluency is something which is done by ourselves only.

If the "y" isn't at the beginning of the word or beginning of a syllable, it's functioning as a vowel

Even though "y" is technically a consonant, there are many more instances in which it functions as a vowel. You'll hear it work as a long /e/ sound (as in city or party), short /i/ sound (as in cyst or symbol) or long /i/ sound (as in fly or shy) depending on the word it's in. It can also be part of a vowel team.

A gerund is a word like “swimming” in the sentence “I have always enjoyed swimming.” The term refers to the “-ing” form of a verb when it functions as a noun. A gerund usually refers in a general way to the activity represented by the verb it's derived from

For any student who's native language is not English and more over their medium of instruction is not English, a working understand and skill of English especially in it's spoken form is very important. Especially with the growing use of English as a common business and public language across all urban and semi-urban centres of India and most of the world.