“too … to” / “enough to”

Too 表示超过了需要或合适的程度（常常因此做不了某事）；enough 表示达到了需要的程度。它们的位置不同：

要说明谁做这件事，在 to + 动词 前面加 for + 宾语：too heavy for me to carry。

• The box was too heavy for me to carry.

  这个箱子太重了，我搬不动。

• Is the water warm enough to swim in?

  水够暖和，可以下去游泳吗？

💡注意位置：enough 放在形容词或副词后面（old enough、fast enough），但放在名词前面（enough money、enough time）。

1. too：超过合适的程度，所以做不了或不好

• I'm too tired to cook tonight.

  我今晚太累了，不想做饭。

• I got up too late to catch the bus.

  我起得太晚，没赶上公交车。

2. not … enough：没达到需要的程度

• My son is only fifteen, so he isn't old enough to drive.

  我儿子才十五岁，所以他还不到开车的年龄。

• He didn't run fast enough to catch the bus.

  他跑得不够快，没赶上公交车。

3. enough：达到需要的程度——没问题

• She's old enough to decide for herself.

  她已经长大了，可以自己做决定。

• Is the room big enough for 30 people?

  这个房间够 30 个人用吗？

4. 和名词连用：enough / too much / too many——enough 也可以单独使用：I've had enough。

• We don't have enough time to see everything today.

  今天我们没有足够的时间把所有东西都看完。

• I drank too much coffee this morning.

  我今天早上喝了太多咖啡。

• There are too many tourists here in summer.

  夏天这里游客太多了。

• No more rice for me — I've had enough, thanks.

  我不要米饭了——我已经吃饱了，谢谢。

要加强或减弱 too 的语气，用 much too / far too 或 a bit / a little too——形容词前面不用 too much。

• These jeans are much too small for me now.

  这条牛仔裤现在对我来说太小了。

• It's a bit too expensive to eat there every day.

  每天都在那里吃饭有点太贵了。

💡Too 通常带有负面意思——超过了好的程度。中文说“太好了”“太漂亮了”是夸奖，但英语不能直接说 too good 来夸奖：要用 so 或 really：This is so good!（You're too kind 这样的固定说法是例外。）

当句子的主语就是 to + 动词 的作用对象时（the tea = 你要喝的东西），句末不要再重复它。如果动词需要介词（swim in、sit on），介词要保留。

• The tea is too hot to drink.

  茶太烫了，没法喝。（不说：to drink it）

• The water was too cold to swim in.

  水太冷了，没法下去游泳。

如果句子以 It（形式主语）开头，宾语要保留。too / enough 后面用 to + 动词——不用 -ing，也不用 for + -ing。

• It's too dangerous to swim in this river.

  在这条河里游泳太危险了。（不说：too dangerous swimming）

• My daughter is too young to go to school.

  我女儿还太小，不能上学。（不说：for going）

• ✗He is enough old to vote.

  ✓He is old enough to vote.

  enough 放在形容词后面。

• ✗It was very cold to go swimming.

  ✓It was too cold to go swimming.

  做不了这件事 → 用 too，不用 very。

• ✗The tea is too hot to drink it.

  ✓The tea is too hot to drink.

  不要重复 it——茶就是你要喝的东西。

• ✗It's too much expensive to eat there every day.

  ✓It's too expensive to eat there every day.

  形容词前面用 too（或 much too），不用 too much。

• ✗This jacket is too small to me to wear.

  ✓This jacket is too small for me to wear.

  表示人 → 用 for + 宾语。

• ✗We don't have enough of money.

  ✓We don't have enough money.

  enough + 名词；enough of 只用于 the/my/them… 前面。