Mark the sentence that is INCORRECT.
(A) I thought the gap year would be a good experience and if I enjoyed it, I’d stay in the Navy.
(B) If left unchecked, it can double the amount of fuel needed to sustain operational speeds.
(C) If I just did the courses they required me to, I’d reach the “minimum threshold capability”.
(D) If the new coating continues to perform well, it is likely to be rolled out for all the vessels.
(E) If I knew their families are present at the ceremony, I will pass on my best wishes to them.

Passo 1

O enunciado pede que a gente identifique a frase com erro gramatical entre cinco opções. O ponto-chave aqui é analisar as condicionais em inglês (zero, first, second e mistura de tempos) e ver qual delas não segue a regra de sequência de tempos e uso correto do modo condicional.

Passo 2

Frase (A): “I thought the gap year would be a good experience and if I enjoyed it, I’d stay in the Navy.”
Aqui temos discurso indireto: o falante pensou no passado (“I thought”) e faz back-shift do first conditional original (“if I enjoy… I’ll stay”) para second conditional em indireto (“if I enjoyed… I’d stay”). Está correto segundo as regras de sequence of tenses.

Passo 3

Frase (B): “If left unchecked, it can double the amount of fuel needed to sustain operational speeds.”
Trata-se de um zero/first conditional sobre algo factual ou possível no presente/futuro próximo. “If left unchecked” (se não for controlado) + “it can double” é perfeitamente natural e correto.

Passo 4

Frase (C): “If I just did the courses they required me to, I’d reach the “minimum threshold capability”.”
É um second conditional expressando hipótese pouco real: “If I did…, I would reach…”. O uso de “just did” funciona coloquialmente como “simplesmente fizesse”. Gramaticamente está certo.

Passo 5

Frase (D): “If the new coating continues to perform well, it is likely to be rolled out for all the vessels.”
É um first conditional: condição real e possível no futuro (“If… continues…”), e consequência provável (“it is likely to be rolled out”). Sem erro.

Passo 6

Frase (E): “If I knew their families are present at the ceremony, I will pass on my best wishes to them.”
Aqui há mistura indevida de tempos: começa com second conditional (“If I knew…”) e termina com future real (“I will pass…”). Deveria haver congruência:
– First conditional real: “If I know their families are present…, I will pass on…”
– Second conditional hipotética: “If I knew their families were present…, I would pass on…”.
Portanto essa opção quebra a regra de sequence of tenses.

Resposta

(E)

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