OG10語法268題及GWD22語法總結(jié)日記(四)

3. Some bat caves, like honeybee hives, have residents that take on different duties such as defending the entrance, acting as sentinels and to sound a warning at the approach of danger, and scouting outside the cave for new food and roosting sites.
    A. acting as sentinels and to sound
    B. acting as sentinels and sounding
    C. to act as sentinels and sound
    D. to act as sentinels and to sound
    E. to act as a sentinel sounding
    1. 平行結(jié)構(gòu)：
    此題大平行里小平行
    A．平行結(jié)構(gòu)的形式對稱 ==》現(xiàn)在分詞和不定式不對稱。
    B. 平行結(jié)構(gòu)可以有多個層次，此處就是 such as A, B1 and B2, and C1. 其中 A，Ｂ，Ｃ大平行， B1 and B2; 是小平行。
    2. 單復數(shù)一致：
    Residents that … acting as + 復數(shù)名詞對應(yīng)，表示同一內(nèi)涵的對象單復數(shù)一致。
    3. 保持原句意思
    平行結(jié)構(gòu)改成分詞修飾結(jié)構(gòu)會改變原句的意思。
    4. Such as / Like 用法：
    A like B. A 和 B是同類的事物進行比較。
    A，such as B , C B 和Ｃ是對Ａ所包含事物的列舉。