3. as +形容詞+(a/an+)名詞+as

　　(17)Our neighbour has ______ ours.

　　A. as a big house as B. as big a house as

　　C. the same big house as D. a house the same big as

　　解析：由句式結(jié)構(gòu)判斷，選B.

　　(18)It is generally believed that teaching is ________it is a science.

　　A. an art much as　B. much an art as

　　C. as an art much as　D. as much an art as

　　解析：由固定搭配"as+形容詞+[(a/an+)名詞]+as"可排除選項(xiàng)A，B和C.答案是D.

　　4. 比較級(jí)，A or B?

　　(18)Which do you think tastes________， the chicken or the fish?

　　A. well B. good C. better D. best

　　解析：兩者之間比較，要用比較級(jí)。答案是C.