S(主） + Vi（不及物动词）（
Birds sing beautifully.
2. S + Vi+ prep Phrase（介
He went on holiday.
3. S + Vi+ Infinitive (不
We stopped to have a rest.
4. S + Vi+ Participle (分
I'll go swimming.
1.S + V + adverbial(状
①The hostess apologized to her unexpected guest for serving an apple-pie without any cheese. ②The little boy of the family left the room quietly for a moment and returned with a piece of cheese which he laid on the guest's plate. ③The visitor smiled, put the cheese into his mouth and then said: " ...