第1题：
第2题：
第3题：
第4题：
What are the two objectives in presenting a new structural item?
When presenting a new structural item we should be primarily trying to achieve two things:
a) to enable the students to recognize the new structure well enough to be able to produce it themselves (ie. establish the form);
b) to make absolutely clear the usage of the pattern, so that when the students produce them, prompted by the teacher, they know what they are saying (ie. establish the meaning).
略
第5题：
第6题：
第7题：
第8题：
第9题：
When the delegates met at Philadelphia in 1787,their task was（）
Ato write a new constitution
Bto see what they can do about the Articles of Confederation
Cto design a new form of government
Dto revise the Articles of Confederation
第10题：
When you write, （） all the necessary information.