People throw thousands of tons of rubbish into the forest every year.
Thousands of tons
People throw thousands of tons of rubbish into the forest every year. Thousands of tons
By Bella
By Bella
People throw thousands of tons of rubbish into the forest every year.
Thousands of tons
People throw thounsands of tons of rubbish into the forest every year.
→ Thousands of tons are thrown into the forest every year.
⇒ câu bị động thì HTĐ: S + is/am/are + V3/ed + (by+O) + time
`=>` Thousands of tons are thrown into the forest every year.
-Giải thích:
+Đây là bị động của hiện tại đơn.
+Thousands of tons là số nhiều `->` are.
+People là danh từ không cụ thể nên không cần dùng by.