"The continuous infinitive is formed:
to be + present participle.
As with the present infinitive, there are situations where the zero form of the continuous infinitive is required, so the word tois omitted. This happens after most modal auxiliaries, and in other places where zero infinitives are used.
EXAMPLES
I'd really like to be swimming in a nice cool pool right now.I happened to be waiting for the bus when the accident happened.It must be nice to be going to a wedding overseas.You must be joking!We should be hurrying. We're late!You'd better be working on your report when I get there."
не имеет соответствующей формы в русском языке, обычно переводится на русский язык глаголом в личной форме. образуется с помощью инфинитива глагола to be и формыPresent Participle смыслового глагола – to be going, to be doing.