例句：
In 'Ben likes school', the verb 'like' is in the indicative.
在Ben likes school中，動詞like是陳述語氣。
Their failure to act is indicative of their lack of interest.
他們未采取行動，這表示他們沒有興趣。
His action is indicative of growing concern about the shortage of skilled labour.
他的行為顯示對于熟練工人短缺現象的日益關注。