1.文章结构：(ten sentences, 120words)
Para. 1. S1 General talk of the topic
S2 Thesis: the writer’s attitude towards it
Para. 2. S3 The writer’s reasons to have this attitude
S4 Support I
S5 Detail I
S6 Detail II
S7 Support II
S8 Detail I
S9 Detail II
Para.3 S10 Conclusion: restate the thesis