probability
1.probability后面接of和动名词或以that引导的从句，不接不定式，如可以说There is no（或not much）probability of (our) seeing him again, There is no（或not much）probability that we shall see him again和There is a probability that school will close a week earlier than usual。不可说There is no（或not much）probability (for us) to see him again或There is a probability (for school) to close a week earlier than usual。
2.下面两句意思相同：
- He says he is not sure whether the letter has miscarried, but the probability is that it has.
- He says he is not sure whether the letter has miscarried, but the probabilities are that it has.
