be動詞後加 動詞 ing形式 除了表示進行時，還能表示其他內容
具體如下：
1.be doing 表現在進行時,正在做某事。
例句：Tom is playing football now.
2.be doing 也可以表示一般將來時,指最近將要發生某事。
例句：The old man is dying.老人快要死了。
3.be doing 後接always等表示頻率性副詞，常表達說話人的某種情緒如讚揚、不滿、責備等
4.be doing 形式 表示動作正在進行,但是有時也可以表示將來或者打算.
比如：I am visiting my grandma tomorrow.
擴充套件資料：
可以加doing的動詞：
mind,escape,practise,enjoy,finish,miss,consider,stand,suggest,keep
imagine,fancy,mention,admit,avoid,delay,dislike,deny,risk,appreciate,recommend
resist,resume,forgive,report，include,excuse,understand,complete,endure,prevent,recall
advise(但advice sb to do),allow(但allow sb to do),permit(但permit sb to do),forbid(但forbid sb to do)
可以加doing的短語：
1.不包括明顯介詞結尾的片語
keep on,insist on,feel like,give up,put off,burst out,set about,be worth,can’t help,be busy,have difficulty/trouble (in)
2.明顯介詞結尾的片語：
dream of/about,think of,think about,succeed in,be afraid of,be good at,be interested in，thank somebody for,excuse for,apologize to sb for,be tired of,be fond of
be sure of,what (how) about,a way of,have the idea of,can’t do something without,in hopes/the hope of,with/for the purpose of
3.含介詞to接doing的動詞片語
object to,be/get used to,look forward to,be devoted to,devote oneself to,come close to,pay attention to,get down to
be reduced to(被迫、淪落到……的地步),take to(變得喜歡、開始經常),fall to(開始)
lead to,be opposed to,come to(接近,差一點),refer to,agree to(同意某個觀點),be on the way to(就要……)
be動詞後加 動詞 ing形式 除了表示進行時，還能表示其他內容
具體如下：
1.be doing 表現在進行時,正在做某事。
例句：Tom is playing football now.
2.be doing 也可以表示一般將來時,指最近將要發生某事。
例句：The old man is dying.老人快要死了。
3.be doing 後接always等表示頻率性副詞，常表達說話人的某種情緒如讚揚、不滿、責備等
4.be doing 形式 表示動作正在進行,但是有時也可以表示將來或者打算.
比如：I am visiting my grandma tomorrow.
擴充套件資料：
可以加doing的動詞：
mind,escape,practise,enjoy,finish,miss,consider,stand,suggest,keep
imagine,fancy,mention,admit,avoid,delay,dislike,deny,risk,appreciate,recommend
resist,resume,forgive,report，include,excuse,understand,complete,endure,prevent,recall
advise(但advice sb to do),allow(但allow sb to do),permit(但permit sb to do),forbid(但forbid sb to do)
可以加doing的短語：
1.不包括明顯介詞結尾的片語
keep on,insist on,feel like,give up,put off,burst out,set about,be worth,can’t help,be busy,have difficulty/trouble (in)
2.明顯介詞結尾的片語：
dream of/about,think of,think about,succeed in,be afraid of,be good at,be interested in，thank somebody for,excuse for,apologize to sb for,be tired of,be fond of
be sure of,what (how) about,a way of,have the idea of,can’t do something without,in hopes/the hope of,with/for the purpose of
3.含介詞to接doing的動詞片語
object to,be/get used to,look forward to,be devoted to,devote oneself to,come close to,pay attention to,get down to
be reduced to(被迫、淪落到……的地步),take to(變得喜歡、開始經常),fall to(開始)
lead to,be opposed to,come to(接近,差一點),refer to,agree to(同意某個觀點),be on the way to(就要……)