The planes /plane ?

问题描述:

The planes /plane ?
谢谢.发明了飞机, invented 后面跟plane用不用加冠词?
2.made in China,如果写完整怎么写?是这样吗:
sth was /is made in China.用过去还是现在?
The desk is made of wood.能用was made吗?
第一句:sb inventedthe plane ,需要加THE 不?

The plane is invented.
sth be made in china.
不是说过去还是现在,看是过去还是现在,得看看前面说的是现在的还是过去的.
The dest is made of wood.但是如果用was的话,应该是有情景的.
the plane 应该加the