`1` My new house is not as comfortable as the old one.

`-` So sánh bằng phủ định: S1 + be + not as + adj + as + S2

`2` Although the children were poor, they seemed very happy.

`-` Although + S + V, S + V: Mặc dù 

Đáp án+ Giải thích các bước giải:

1.My new house is more uncomfortable than my old one

-So sánh hơn với tính từ/ trạng từ dài:

S1 + to be + more + Adj + than+ S2

2. Although they were poor, the children seemed very happy.

Although + S + V, S + V: Mặc dù...