⇒⇒  Reflexive Pronouns

a) I am an engineer. I work by  myself.

a. itself

b. yourself

c. himself

d. herself

e. myself   √

b) He is an engineer. He works by himself.

a. ourselves

b. yourself

c. herself

d. itself

e. himself   √

c) My boyfriend ate all the cake by himself.

a. yourselves

b. herself

c. himself    √

d. themselves

e. ourselves

d) My girlfriend ate all the ice cream by herself.

a. himself

b. yourselves

c. herself    √

d. yourself

e. ourselves​

Explicação:

→→  Reflexive pronouns - pronomes reflexivos >> são usados para indicar que a ação do verbo recai sobre o próprio sujeito

→ para dar ênfase

They themselves went to London.

they themselves >> eles mesmos / próprios

→ para dizer que alguém fez algo sozinho. (precedido de 'by')

Julie finished the work by herself.

by herself >> sozinha

→ para indicar uma ação que afeta quem a praticou

John hurt himself when he was mowing the grass.

hurt himself >>> se machucou

Aprenda mais em:  

→→  

→→  

→→