1not to kknow (it's +adj.+to do sth )
2 to explain( refuse to do sth )
3 to help ( would like to do sth )
4 to be ( pretend to do sth )
5 to be fired ( seem to do sth )
6 to keep ( sorry to do sth )
7 to do ( pretend to do sth )
分析:括号中是解析,是固定用法
加油!不明白再问!