4. Lower： 可以是adj.的比較級;也可以是v.表示降低

5. This may all be confusing to the visitor. (系動詞后是現在分詞作表語;之所以用ving是因為我們要考慮這件事情“令人迷惑”)

6. Read the advertisements so that you can compare prices.(so that 是因此的意思，表結果狀語從句)

7. They don't offer the same services to buyers that department stores do.(定語從句中缺賓語可以用that)

8. Limit(v.限制)-limited(adj.受限的);expensive――inexpensive

9. Usually run by a small number of salespeople， these shops offer products that range from inexpensive to very expensive， depending on the shop.

10. One of the most interesting sections to visit is the frozen food section.(過分作定語)