1. 分詞構文(2)…過去分詞を用いる場合
    a. Situated in a rather warm area, it was covered by forests and filled with various animals and birds.
    b. Led by a man with the national flag, the team marched down the street.
    c. Written more carefully, this letter would have fewer mistakes.
  2. S + V + O(=it) + C + thatで始まる節
    a. This study has now made it clear that the present atmosphere contains a larger amount of CO2.
    b. We thought it necessary that all of the members should agree before starting the plan.
    c. Tom found it interesting that Japanese people often see movies alone.