Đáp án+Giải thích các bước giải:

1. These clothes are not expensive. I thought they were expensive at first. (not as...as) 

-> These clothes aren't as expensive as I thought at first.

2. At first I thought he was so generous. But in fact, he was not generous. (not as...as) 

-> He wasn't as generous as I thought at first

• Với so sánh không bằng, chúng ta sử dụng cấu trúc

      not as/not so + tính từ + as

3. Taking taxi to the park costs, taking bus to the park cost. (less than) 

-> Taking bus less than taking taxi to the park costs.

4. There are many vehicles in Ha noi. There are a few vehecles in Hai Phong. (fewer) 

-> There are vehecles in Hai Phong fewer than vehicles in Ha noi.

- Less được dùng kèm với danh từ không đếm được, còn fewer được dùng với danh từ đếm được.

5. We will use more solar energy in the future. It is clean, safe, and available. (because) 

-> We will use more solar energy in the future because it is clean, safe, and available.

6. Many people dont use the personal hover scooter. It may be difficult to park. (because) 

-> Many people dont use the personal hover scooter because it may be difficult to park.

Sau because là một nguyên nhân.

#NHATNGUYEN
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`1`.These clothes aren't as expensive as I though

`\rightarrow` So sánh ngang bằng : S1 + is / am / are ( not ) + as ... as + S2 ( `1 , 2` )

`2`.He wasn't as generous as I though at first

`3`.Taking bus to the park costs less than taking taxi to the park

`\rightarrow` So sánh hơn ( Danh từ ) : S1 + V + more / less / fewer + N + than + S2 ( `3 , 4` )

`4`.Hai Phong has fewer vehicles than Ha Noi

`5`.We will use more solar energy in the future because it is clean , safe and available

`\rightarrow` Because + C1 + C2 : Bởi vì ( `5 , 6` )

`\rightarrow` Because dùng để chỉ nguyên nhân , lý do ( `5 , 6` )

`6`.Because the personal hover scooter may be difficult to park , many people don't use it

`\text{# Kirigiri}`