1. 在日本，是不允许在地铁和公共汽车上用手机打电话的。( forbid )

2. 我妈妈做饭时不仅考虑营养价值，还考虑花色品种。( variety )

3. 近年来随着3D电影变得越来越流行，似乎3D电视也可能在不久的将来进入每个家庭。( with )

4. 他生来就有残疾，但从不沮丧，也从未屈服于困难。( nor )

5. 孩子成年了还啃老, 父母也是有责任的，甚至动物也知道应该教下一代如何生存。(responsible)

1. In Japan, it is forbidden to make a phone call by mobile / cell phone on /in the subway ( on the underground ) or in / on a / the bus ( in / on buses ).
2. While ( When ) cooking / While ( When ) my mother cooks,  my mother / she considers not only ( just ) nutrition(al) / nutrient value, but variety as well / but also variety.
3. With the 3D movies / films becoming more and more popular in recent years, it seems that 3D TV ( sets ) may go into / enter every household / home in the near future.
4.  He was disabled from birth, but he never felt frustrated, nor did he ever give in to any difficulty.
Although / Though / While he was disabled from birth, he never felt frustrated, nor did he ever give in to any difficulty.
5. If a child depends on his (or her ) parents / If children depend on their parents for everything, his (or her) / their parents are responsible for it, as / because / since even animals know ( that ) they should teach their children how to survive.

第1题，考察it作形式主语。注意公共交通工具的介词搭配，本题较灵活。

第2题，考察not only...but also的用法以及时间状从，variety提示“花色品种”。

第3题，考查伴随状语，以及it seems that...引导表从。进入家庭——go into every home；may用在对将来没有把握的推测。

第4题，本题较灵活，可以用but连接并列句，也可用Although / Though / While引导让步状从。注意nor紧跟在前一个否定句之后。

第5题，考查as / because / since引导原因状从，虽然中文没有在字面上给出“因为...所以”，考生需要去判断前后逻辑并选择合适的连接词。注意提示的固定搭配be responsible for sth.以及“知道”引导的宾从表达。