Qual das frases abaixo está incorretamente escrita no passado contínuo?

(A) - 
 i was watching tv when my friend arrived.
(B) - 
 we were playing soccer before the rain started.
(C) - 
 she was sleeping when i called her.
(D) - 
 they were having dinner at 7 pm yesterday.
(E) - 
 the children were not studying at that moment.

Explicação

No passado contínuo, o verbo "to be" (ser ou estar) deve estar no past continuous (was/were) seguido pelo verbo principal no gerúndio (ending in -ing). na frase (d), o verbo principal "to have" (ter) está no presente simples (have), e não no gerúndio (having).

Análise das alternativas

As demais frases estão corretas no passado contínuo:

  • (a): i was watching tv when my friend arrived.
  • (b): we were playing soccer before the rain started.
  • (c): she was sleeping when i called her.
  • (e): the children were not studying at that moment.

Conclusão

O passado contínuo é usado para descrever ações que estavam em andamento em um determinado momento no passado. é importante lembrar que o verbo "to be" deve estar no past continuous (was/were) e o verbo principal no gerúndio (ending in -ing).