He(chat) with his friend when his mother came into the room
Câu hỏi
Nhận biếtHe ____________ (chat) with his friend when his mother came into the room.
Đáp án đúng: C
Lời giải của Tự Học 365
Giải chi tiết:
Đáp án C. Ta thấy có when + mệnh đề chia thì quá khứ đơn. Đây là câu kể về một sự việc đang diễn ra thì có một sự việc khác xen vào. Sự việc đang diễn ra chia thì quá khứ đơn, và sự việc xen vào chia thì quá khứ tiếp diễn. Câu này có nghĩa là: Anh ấy đang tán gẫu với bạn của anh ấy khi mẹ của anh ấy bước vào phòng. Mệnh đề đầu tiên sẽ chia thì quá khứ tiếp diễn. Với chủ ngữ là “he” ta sử dụng cấu trúc: was + V-ing.
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