What is the plural of TV?

TV is "TV" and has no plural form. TV is TV set and the plural form is TV sets

The plural of knife, wife, thief

knives
wives
thieves

Given that z is a complex number, Z plus 2 I and Z minus 1 I are both real numbers

Let z = a + bi
Z+2i=a+(b+2)i
Z/(1-i)=(a-b+(a+b)i）/(1-i)(1+i)=(a-b)/2+(a+b)/2i
From the meaning of the title, B + 2 = 0; a + B = 0
a=2;b=-2
That is Z = 2-2i

Given that m ∈ R, the real part and imaginary part of the complex m + I1 + i-12 are equal, then M = 1___ ．

M + I1 + i-12 = (M + I) (1-I) (1 + I) (1-I) - 12 = m + i-mi-i22-12 = m + 12-12 + 1-m2i, ∵ the real part and imaginary part of complex m + I1 + i-12 are equal, ∵ m + 12-12 = 1-m2, the solution is m = 12

Which indefinite pronouns are used as subjects and the predicate verbs are singular?

Answer: Yes, including something, someone, somebody, somebody, somewhere. All predicate verbs use the singular. In short, it is a notional verb to add s

What's the form of the predicate after "someone"?

The infinitive pronoun composed of - thing / - Body / - one is the subject, and the predicate verb is singular. Other infinitive pronouns should be determined according to the meaning

Indefinite pronoun: do subject predicate verb use singular, what else

The singular and plural of the predicate verb depend on the specific object it refers to
All we need 【is】【more practice】.
All we need 【are 】【more books】.
I wish you happiness!

Does work have to be plural when it is used as "work"?

If it's one work, it's one work, and two works, it's the same as a common countable noun

Can some fruit be singular or plural? What's the difference?

Fruit is an uncountable noun, usually without s
e. G: apples are fruit

Milk, bread, fruit, and so on

It's just a convention

What is the plural of TV?