Câu hỏi:

22/07/2024 11.8 K

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Only after the teacher _______ the procedure clearly were the students allowed to go ahead with the experiment.

A. was explaining.

B. would explain.

C. had explained.

Đáp án chính xác

D. has explained.

Trả lời:

verified Giải bởi Vietjack

Chọn đáp án C

Cấu trúc đảo ngữ với Only after:

Only after + mệnh đề xuôi + mệnh đề đảo

Ta thường gặp trường hợp:

Only after + had + S1 + done sth + did + S2 + do sth (dạng chủ động)

Hoặc Only after + had + S1 + done sth + were/was + S2 + done sth (dạng bị động)

Vì sự việc thứ nhất buộc phải diễn ra sau sự việc thứ hai nên mệnh đề xuôi phải sau mệnh đề đảo một thì.

Vậy ta chọn đáp án đúng cho câu hỏi này là C.

Tạm dịch: Chỉ sau khi giáo viên giải thích quy trình một cách rõ rang thì học sinh mới được phép bắt đầu thí nghiệm.

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