I'm green. = I am new to sth.= sth is all new to me.

1.Saying "I'm green" signifies that you are unfamiliar or new at the subject or matter at hand.
對某事不是很熟悉，在某方面是個新手。

2.Think of a marigold (flower). When the stem first comes out of the soil, the only color visible is green. Once it has done more growing, the actual petal color becomes visible and eventually blooms into a beautiful, colorful flower.
想象一下，一朵金盞花，一朵花兒，它的莖剛從土里鉆出來的時候，你只能看見一點點綠色，得繼續長一段兒時間之后它才會開花，你才能看到其他比如說紅的紫的花瓣兒的顏色

3.Even though I have been studying English for a few weeks, I'm still green.
盡管我已經學了好幾周英文了，但是還是個新手。

4.Can you explain how to find my IP Address? I'm new to the internet.
你能教教我怎么找到我的IP地址嗎？我在電腦方面是新手。

5."You must think that I'm stupid You must think that I'm a fool You must think that I'm new to this But I have seen this all before"
你肯定覺得我是個傻瓜,你肯定覺得我愚蠢至極,你肯定會覺得我還不熟悉,但我只能說一切我已看盡.

6.I'm an expert (at doing). It means I'm very good at something or I have a lot of knowledge about something.
我(在某方面)是專家。我很擅長(做某事)。