1. Caught in rain yesterday, he is ill toady, but he has gone to school. (两套主谓系统用but进行连接，符合“M-1= 连接词数目”的标准)
2. He has no choice but to finish all his homework today, or it will be too late. (两套主谓系统用or进行连接，符合“M-1= 连接词数目”的标准)
3. Walking alone along the river bank, I came into Peter, and he took me to his home. (两套主谓系统用and进行连接，符合“M-1= 连接词数目”的标准)
