本期練習重點：非謂語動詞，及物與不及物動詞誤用
    1.You have to practice speak English as much as possible ____1____
    now since you are going to England next year．
    2.Consider the great need for improving many aspects of the ___2___
    global environment, one is surely justified in his concern
    for the money and resources
    3.At the beginning of 19th century working hours were from
    sunrise to sunset, pay was awful, and working conditions being ____3___
    poor and dangerous.
    4.Today, the Mona Lisa looks rather somber, in dull shapes of
    brown and yellow. This is due to a layer of varnish cover the ____4____
    paint, which has yellowed over the years
    5.We should avoid from those shallow people who are easily ____5_____
    changed by adversities misfortune.
    6.Taking together, these factors enabled the working class to exist ___6___
    but allowed them no sense of security.
    7.Between 1890 and 1920, for example, some 250,000
    new residential lots were recorded within the borders
    of Chicago, most of them locating in outlying areas. ___7____
    8.Charles Deschanel stressed that the French economy
    needed a larger share of the international market to
    balance between its import and export trade. ____8____
    9. Deciding how much discomfort and risk we are prepared to
    put up with in the name of better health is a highly personal
    matter, not a decision we should remain to doctors alone. ___9____
    10. Television, it is often said, keeps one informing about current ___10___
    events and the latest developments in science and politics.
    參考答案及解析
    1. speak-> speaking
    practise后的賓語要用-ing形式。
    2. Consider -> Considering
    3. being -> were
    4. cover -> covering
    此處的cover用來修飾前面的名詞a layer of varnish，可見應該使用非謂語動詞形式。另外兩者間是主動關系，故使用現(xiàn)在分詞。
    5. from -> avoid是及物動詞，后面可以直接跟賓語。
    6. Taking -> Taken
    此處的非謂語動詞take與主句主語these factors之間是被動關系。
    7. locating -> located
    most of them locating in outlying areas這句是獨立主格結構，them指代的是residential lots，be located in表示“…坐落在…”，locate要用過去分詞。
    8. between -> balance作動作詞時是及物動詞，后面不用加介詞，意思是“使…平衡”。
    9. remain → leave
    remain：保持、仍然，是一個表示狀態(tài)的動詞，其用法和系動詞“be”相似，后面所接成分一般是名詞或形容詞，作表語。leave是“留下，留給”的意思，是及物動詞。leave sth.to sb：把某物留給某人。所以應把remain改成leave。
    10. informing -> informed
    本題中one指的是人，one與inform之間是被動關系，informed作的是賓語補足語。
    Keep + sth /sb + a / v-ing / v-ed，賓語補足語是用現(xiàn)在分詞還是過去分詞取決于它與sth / sb之間是被動還是主動關系。