Grammatical Tenses

The past participle of "call" is "called."

The future progressive tense of "sour" is "will be souring."

The present participle of "smoke" is "smoking."

Yes, "shrunk" is the past participle of the verb "shrink." For example, "The shirt has shrunk in the wash."

'Now' isn't a verb and so doesn't have any tenses.

The past participle of "settled" is also "settled."

Subject is "secret of a good speech"

Predicate is " is in the pauses" -

Already is not a verb so does not have a past participle form.

There are several reasons for this. For one, it is convention and certain tenses are used for certain types of writing (such as literature analysis always being done in present tense). Switching between tenses within a kind of essay that is usually written in a certain tense can be quite confusing.

Also, when verb tenses do change within an essay, it's because they are still in chronological order. It's acceptable to describe an event in the past tense to explain the events that led up to the present tense situation that you're writing about, for example. If verb tense switches without reason, it can mislead the readers into thinking that such a shift has taken place even if it hasn't.

Hid is the past tense, and hidden is the past participle.

The past participle of "enlarge" is "enlarged."

What is that ? What do you mean when you say "Having A Pen"?

Since this was placed in the grammar topic, the best guess would be that the question is how to properly rewrite the question with correct grammar. Best guess for that would probably be:

"Does anyone have a pen?"

The past tense form of "ask" is "asked".

The past participle is told.

Worse is rarely used as a verb. When it is, the past and past participle is worsed.

The past participle of "compare" is "compared." For example, "I have compared the two options and made a decision."

The future tense of "withhold" is "will withhold." For example, "I will withhold the information until further notice."

The present participle is closing.

Present tense: become/becomes/becoming.

Past tense: became.

Future tense: will become, going to become, am/is/are becoming

Present tense: work/works/working

Past tense: worked.

Future tense: will work.

"Catch" is the present tense. "Will catch" is the future tense.

The past tense of "light" is "lit" or "lighted," and the past participle is also "lit" or "lighted."

The future tense of ban is will ban.