English Errors:

Language, especially a language like English is an expression of creation, constantly evolving. (English evolves!)

Yesterday, Inside OAU Media  made a blog post with an headline which sparked different reactions and arguments amongst students. The headline to the post in question goes thus: Debunk fake News, O.A.U. has yet to announce any resumption date
The reactions gotten from students all sum up to its grammatical accuracy.
In a bid to clarify the aforementioned, here’s another blog post.
As students, we should be open to learning, unlearning and relearning. We hope this is explicit enough!

Let’s consider the use of IS Yet & HAS Yet, following the incessant misuse of these words by non-native speakers. Many a user of English misconstrue or ignorantly intertwine the both.
Without prevarication, see the rejoinder below:

1a. I AM yet to return to London❌
1b. I HAVE yet to return to London.✔

1c. He IS yet to eat his food❌
1d. He HAS yet to eat his food.✔

1e. They WERE yet to accept our request before we changed our mind.❌
1f. They HAD yet to accept our proposal before we changed our mind.✔

Note– Am/Was/Is/Were YET to DO SOMETHING❌

Have/Has/Had Yet to DO SOMETHING✔

Why is this so, the curious mind may ask?

Let the general reader be reliably apprised that in the English language, fixed expressions are never to be varied or altered. Doing so makes the expression wrong no matter who is saying it.

Somebody/Something HAS yet to do something is a fixed expression and should never be varied, the image below from the Dictionary lends credence to this assertion.

Consequently,

2a. The bank IS yet to respond to our letter.❌
2b. The bank HAS yet to respond to our letter.✔

In ruminating over all of the above, another question popped in– can there be a situation where “IS YET” collocates and is permissible in English? We found an example situation & sentence from Merriam Webster, America’s trusted dictionary.

Consider this–

3a. South Sudan HAS yet a new country❌
3b. South Sudan IS yet a new country✔

So, notice the difference–

If the sentence ends in DOING SOMETHING, emphasis on “Doing Something” the proper verbs that collocate with “YET” are– Have/Has/Had✔ and not the conjugated forms of “BE” which are– Am/Is/Was/Were❌.

As earlier said, English evolves.
“I AM yet to…” use to be right, but it isn’t generally used these days. It’s got a very old-fashioned sound to it, the sort of thing that might have been in use a hundred years ago, or earlier, but not now.

Most people these days might write;
“I HAVE yet to read the book”, but in everyday conversation would be more likely to say “I haven’t read the book yet.”
Speech is usually less formal than writing, at least in conversation between family and friends.

We hope this is explanatory enough.

Let’s keep thriving towards dexterity. This is not our indigenous language, hence, we should not ‘murder’ it.