have no alternative but to do sth

例句：

1. 1.We have no alternative but to accept the offer.
   我们别无选择，只能接受这个提议。
2. 2.If you don't pay up, we have no alternative but to sue you.
   如果你不付款，我们别无选择，只能起诉你。
3. 3. The company had no alternative but to lay off its employees.
   公司别无选择，只能裁员。