The stream is cleaner, isn’t it? ↘ (seeking agreement); You have checked the source, haven’t you? ↗ (genuine uncertainty). Falling tags often expect agreement; rising tags often check information. Context matters. Keep auxiliary and pronoun agreement: They can help, can’t they? Do not treat every tag as a request for confirmation with the same certainty.
Compound nouns combine words into one concept: nature reserve, food chain, greenhouse gas, wildlife protection. The final noun usually determines the plural: nature reserves, food chains. Some compounds are written as one word, some separately or with a hyphen; check established usage. Stress often falls earlier in noun compounds, but patterns vary. Choose a compound for meaning rather than merely placing any two nouns together.
ecosystem
hệ sinh thái
food chain
chuỗi thức ăn
habitat
môi trường sống
native species
loài bản địa
restore
phục hồi
nature reserve
khu bảo tồn thiên nhiên
Compound nouns combine words into one concept: nature reserve, food chain, greenhouse gas, wildlife protection. The final noun usually determines the plural: nature reserves, food chains. Some compounds are written as one word, some separately or with a hyphen; check established usage. Stress often falls earlier in noun compounds, but patterns vary. Choose a compound for meaning rather than merely placing any two nouns together.
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A sequence showing who eats whom is a ___.
Land managed to protect nature is a ___.
Choose the correct plural.
Carbon dioxide is a ___.
Choose the correct plural of food chain.
Protecting wild species can be called ___.
The main noun in “water pollution” is ___.
A compound naming a place where animals naturally live is ___.
Match each topic expression with its meaning in this unit.
Chạm một ý bên trái rồi chạm ý tương ứng bên phải để ghép cặp.
Read the practice below aloud twice: first slowly, then at a natural pace. Explain the unit’s sound/stress focus and demonstrate it.
The stream is cleaner, isn’t it? ↘ (seeking agreement); You have checked the source, haven’t you? ↗ (genuine uncertainty). Falling tags often expect agreement; rising tags often check information. Context matters. Keep auxiliary and pronoun agreement: They can help, can’t they? Do not treat every tag as a request for confirmation with the same certainty.
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