1．towards的用法和例句(美国有作toward)：
1)向着，方向：
A boy came running towards us．
一个男孩向我们跑来。
He was now walking towards the river．
这时他向河边走去。
She is taking courses toward a master's degree．
她正在修硕士学位的课程。
2)快到(某时)：
Towards one o'clock they reached home．
快到一点时他们回到家里。
She came to see me towards the end of the week．
快到周末时她来看我。
It's getting on towards the end of term now．
现在已快到期末了。
3)对于：
The teacher was very lenient towards us．
老师对我们很松。
He has changed his attitude towards the work．
他改变了对工作的态度。
She had no ill-feeling toward him now．
她现在对他没有恶感了。
2．under的用法和例句：
1)在……下方(面)：
They are cooling themselves under the trees．他们在树下乘凉。
He had a book under his arm．他腋下夹了一本书。
Please push the stool under the bed．请把凳子推到床底下。
2)（under用于引申意义)在……之下：
All their activities were put under unified command．
他们的一切活动都置于统一指挥之下。
All places of strategic importance came under their occupation．
所有战略要地都被他们占领。
We did that under orders．
我们是奉命行事。
3)（under引起短语作表语)表示主语所处状态等：
The road was under repair．
路正在修。
The proposal is now under discussion．
提案正在讨论。
I'm a bit under the weather．
我有点不舒服。
In 2040 Venice will be under water．
2040年威尼斯将会被水淹没。
