2． 要点要齐全。
3． 语句要通顺连贯。
有效使用语句间的连接成份。
表示时间的：in the past, right now, at present(目前), 表示转折的: but, however, on the contrary(相反的)， 表示递进的besides, what’s more, in addition, 表示并列的，as well as, both…and, either…or…, neither…nor, not only…but also,
表因果的，therefore, now that(既然), 表示列举：for instance, such as;
表示总结：in a word, in short, in brief, in conclusion, 表示对比的，while, instead of, on the other hand I spoke English very carfully. However, he could not understand me.
4. 运用高级词汇和较复杂的结构。 Duty responsibility
e.g. These tickets are available for one month.
These tickets can be used for one month. 尽量用非谓语结构，(特别是现在分词或过去分词短语结构) 或某些固定结构：with 复合结构，so/such…that…, enough to do…, as well as…, not only…but also…
e.g. Not knowing her address, I wasn’t able to contact her.
Not being able to understand English, he didn’t know how to explain to them.
The woman went to her mother’s carrying her baby, with a duck in one hand and a chicken in another. The teacher was approaching the classroom, with a book in his hand.
I have a passion for pop music. (like) I am crazy about pop music. He is fond of children. I take great interest in music.