assist sb.to do sth.和assist sb.in doing sth.什么时候用assist sb.to do sth.什么时候用assist sb.in doing sth.最好能帮忙举个例子说明.

assist sb to do sth中to可以去掉么? assist sb.to do sth.和assist sb.in doing sth.什么时候用assist sb.to do sth.什么时候用assist sb.in doing sth.最好能帮忙举个例子说明. 关于assist的一些词组的区别assist sb.with sth.assist sb.to do sth.assist sb.in doing sth.这三个词组的意思都是帮助某人做某事,它们有区别吗?区别在哪? do sb.to do sth. sb.happen to do sth. invite sb to do sth teach sb.to do sth. keep sb to do sth told sb.to do sth. get sb.to do sth live sb to do sth ask sb to do sth wish sb to do sth get sb.to do sth consider sb./sth.to do ask sb to do sth. ask sb to do sth get sb to do sth