get down to后接do还是doing,

get down to后接do还是doing, get down to 后加do还是doing,to什么时候作介词,什么时候作不定式 get sb down后面加doing还是to do? get down to do还是get down to doing是开始从事的意思? get sb down 后面接 to do sth 还是doing sth?还是其他的? 英语疑问是get down to do还是get down to doing选什么为什么As far as I know set down to do 还是 doing get to doing 还是get doing?get to doing sth与get to do sth区别, risk 后接 doing 还是 to do suggest后接 to do还是 doing mind 后接doing 还是to do 静下心来做某事是settle down to doing 还是 to do