as和like表示對照，比較的意思時很難區分，接下來介紹幾個常見區別。 首先，來看幾個例子：
I worked as an actor for two years.I went home early as i felt ill.He looks as if he hasn’t slept.As you know, this is the third time I』ve had to complain.He looks like his dad.She’s like a sister to me.Try to do something relaxing, like reading a book or having a bath.現在我們來看一下as和like的具體區別：
as+形容詞 +as 和as much as我們通常用as+形容詞 +as 或as much as來表示兩者擁有或沒有相同的東西。 比如：She loves curry as much as I do. He's not as tall as his brother. It's not as expensive as the other hotel. That dog is as big as that child! 另外我們as還用於固定搭配the same as 比如：Your phone is the same as mine. Texting is not the same as speaking in person.
like+名詞like後跟名詞或代詞，表示兩者相似 比如：He's like a father to me. She's acting like a child. It's like a burger but with big mushrooms instead of bread. There are lots of people like us. 另外，like還通常和感官動詞連用 比如：She looks like her mother. It sounds like a cat. Nothing tastes like homemade lemonade. It smells like medicine. It feels like cotton.
as if/as though +分句as if/as though +分句，用來比較真實情況和虛擬情況 比如：You look as if you've seen a ghost. I felt as if I was floating above the ground. You talk as though we're never going to see each other again.
舉例子用like和such as舉例子 比如：You could try a team sport like football, basketball or hockey. You should take something soft, such as a towel, to lie on.
描述職業或功能as+名詞，描述職業或功能 比如：I worked as a shop assistant for two years. He used his coat as a blanket to keep warm.
as 用來連接兩個詞組as可以用作連詞連接兩個詞組
as = 'because'All the tickets were sold out as we got there too late. As the road was closed, I had to park on the next street.
as = 'while' or 'during the time that'She called as I was getting out of the bath. As they were arriving, we were leaving.
as = 'in the way that'As we expected, it started to rain. As you know, classes restart on 15 January. As I said, I think this project will be a challenge.
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