如何使用 "seen" 造句

1. I had not seen any for over a week .
我已经有一个星期没有看见云了。
2. His mother must have seen him drive up .
他母亲一定是看见他的车子开过来了。
3. We want to be seen and acknowledged .
我们希望被看见,被认识。
4. He heard what he had not yet seen .
他听见了还没看见的事情。
5. She had seen nothing , and fainted .
她什么都没看见,晕了过去。