is,am,are,was,were,being,been,to be怎么用
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 04:12:37
is,am,are,was,were,being,been,to be怎么用
is,am,are,was,were,being,been,to be怎么用
is,am,are,was,were,being,been,to be怎么用
is am are 用在一般现在时的句子中
were was 用在一般过去式的句子中
being 可以和别的助动词构成别的时态,例如will be beding.../have been being...
been to 用在have/has been to中 意为曾经到过.
to be一般用在非谓语中,例如, there are so many things to be done.