looks like 和seems like

It looks like...

看起来...

1.It looks like he don't know who she is.
看起来他不知道她是谁。

2.It looks like she will be she will be a wonderful boss.
看起来她会成为一个出色的老板.

3.It looks like it is going to rain.
看起来要下雨了

it looks as if

看起来好像(带有猜测的性质)

1.It looks as if he has been ill for a long time
他看起来好像已经病了很长时间了。

2.It looks as if it is going to rain
看起来好像要下雨了。

3.It looks as if he is drunk.
他看起来好像喝醉了。

it seems like ...

看起来似乎...

It seems like 和It looks like 类似，但是looks表示比较明显，而seems表示不是那么的确定。
It looks like 常用于表示表面上看起来。

1.it seems like they break up.
他们好像分手了。

2.It seems like she need help.
她似乎需要帮助。

3.It seems like you have cold.
你好像感冒了。

It seems as if...

看起来好像(但是，实际上很可能不是)

1.It seems as if he is a millionaire.
他看起来好像是个百万富翁似的。（实际上，百分之八九十不是）

2.It seems as if you are my father.
好像你是我的父亲似的。（实际上，你不是我的父亲）

3.It seems as if she knows everything
好像她什么都知道似的.(实际上，不是)