Translation of "Jeff" in Chinese

Jeff seems to know where she is.

- Jeff 好像知道她在哪裏。
- 似乎杰夫知道她在哪儿。

It seems that Jeff knows who she is.

杰夫似乎知道她是谁。

Jeff searched for three months before he found a job.

杰夫找了三个月以后才找到了一份工作。