Do you think you can make yourself understood in English?
你认为你能用英文表达你的想法吗?
If you can find another pair of tickets we'll have enough for a dozen people.
如果你能再找到两张,我们就可以有十二个人去了。
We also make the fundamental error of announcing our resolutions to everybody so that we look even more foolish when we slip back into our bad old ways.