今天要學的4種英語時態(tài)，
并不是真的不存在，
而是情態(tài)動詞would的4種用法：

① would do
② would be doing
③ would have done
④ would have been doing

并不是英語概念里真正的時態(tài)喲~

would的用法很多，相對有難度。
難度不是來自于用法難，
而是跟與中文概念不同，
容易造成理解困難和偏差。

舉例：以 would do 為例

1、禮貌用語
- Would you like some food?
你想吃點東西嗎？

- I would like to book a table.
我想訂一個位子。

- I wouldn't agree with that.
我不同意。

2、虛擬語氣
It would be nice if I had a heater at home.
如果家里有暖氣就好了。

3、過去的習慣
He would call me at midnight. So annoying.
他以前會半夜給我打電話。好煩。

以上并非would的所有用法，
would的用法還有更多。

情態(tài)動詞也有很多，比如：
will, would, shall, should,
can, could, ought to, must,
need, have to, may, might 等。

這是一個很大的體系，
值得像學時態(tài)一樣好好學習。