be，become，get和turn的用法區(qū)別

1. be表示“成為”時，多用于將來時、祈使句或不定式。如：

I would like to be a bus-driver.

My younger sister wants to be a movie star.

2. become多指身份、職位等的變化，強調(diào)變化的過程已經(jīng)完成，后面可接名詞或形容詞。如：

Later the boy became an artist.

Her mother became angry when she heard the news.

3. get多用于口語，表示一種變化過程，強調(diào)的是“漸漸變得”，后常接形容詞的比較級。如：

It's getting darker and darker outside.

In winter the days get shorter.

4. turn指在顏色和性質(zhì)等方面與以前的完全不同，強調(diào)變化的結(jié)果。如：

Leaves turned brown in the mountains.