2.4.2021. Subjunctive
The subjunctive is a set of verb forms used mainly in rather formal English to talk about possibilities rather than facts. The present subjunctive uses the base form of the verb(e.g. We suggest that she leave immediately) and the past subjunctive uses were( e.g. If I were you, I'd go home now.)
The subjunctive is used when we talk about potential or imaginary situations. It is often introduced with the expressions I wish or if only.
To talk about present wishes, use Past Simple after these expressions.
To talk about past wishes, use Past Perfect after these expressions.
Example:
If only he had invited me to his party.
I wish I was/were* taller.