Verbs of SA
Verbs of suggestion or advice:
suggest - recommend - propose - advice etc.
a) Subjunctive form
I suggested that she buy a car.
b) should + bare infinitive form
I suggested that she should buy a car.
c) Gerund form (-ing)
I suggested buying a car.
d) Indicative
They suggested she left the house (= this is Statement / assumption about what happened in the past, not a suggestion)
Verbs of DCI
Verbs of demand/command/insistence
demand, insist, request, urge, ask, require, stipulate, decree, order, command etc.
a) Subjunctive form
They insisted that he leave.
b) should + bare infinitive form
They insisted that he should leave.
c) Indicative form (only BE)
(it’s often used to describe a repeated or habitual demand (in this case you use the present simple). It can also be a statement about fact/belief. It doesn’t express a necessity, insistence etc. )
ex.
They insist he leaves the office by 6 p.m. every day.
They insisted that he left. = They claimed / maintained that he had left
adjectives of NIUR
-adjectives that express some form of necessity, importance, urgency, or recommendation —
in other words, they convey a judgment about what should happen:
“Does the adjective describe something that must, should, or ought to happen?”
If yes → it probably triggers this pattern.
a) Subjunctive form
It’s important that he be here.
b) Should + bare infinitive form
It’s important that he should be here.
c) indicative (present, past etc.)–> BUT this states a fact (he is here, and that’s important), It doesn’t express necessity or requirement
It’s essential that he is here.
SAPCRB verbs
seem/ appear/ pretend/ claim/ report/ believe
a) to + infinitive –> It expresses an action or state as perceived, assumed, claimed, or pretended.
They seem to have plenty of money
They pretend to care about me
b) to be + -ing form (continuous infinitive) –> describes an action ongoing at the time of the main verb.
I pretended to be reading the newspaper (= I pretended that I was reading)
The workers are reported to be protesting outside the factory. (= It is reported that they are protesting.)
c) to have (done) (perfect infinitive) = not usable with “believe” –> expresses a completed action in the past relative to the main verb.
Have you seen my keys? I seem to have lost them (= It seems that I have lost them)
He claims to have solved the problem already. (= He says that he solved it.)
The company is reported to have increased its profits this year. (= It is reported that they increased profits.)
d) Verb + (that) + clause = not usable with “seem” or “appear” –> Used to report statements, beliefs, or assertions.
The verb in the that-clause is in the normal indicative (not subjunctive).
She claims that he is guilty.
She pretended that she was asleep.
I believe that she is honest.