alternative, household, date back to

I think that we should... because...

I suggest we...

If..., then maybe we ought to...

Perhaps we should / could...

We must ask for help from...

What if...?

It seems likely / unlikely that...

It looks like...

It could be because...

How large do you think it is?

Is there any on the...?

It may /might have been used as / for...

2. Ability goals能力目标

Enable the students to talk about the archaeological evidence and knowledge and learn to describe people and practice giving opinions.

3. Learning ability goals 学能目标

Help the students learn how to give opinion and describe objects

Teaching important & difficult points教学重难点

Learn how to give opinion and describe objects

Teaching methods教学方法

Listening and cooperative learning