I'm only scratching the surface here.
If you don't use it anymore for 10 years or longer, you will not forget it.
We would never have expected that.
The Moscow underground transportation system is the deepest one in the world.
You have to listen carefully and you repeat.
What do I mean by that?
Being a bilingual was really helpful in learning my first language.
PRESENT SIMPLE
SUPERLATIVE FORM
FIRST CONDITIONAL (Present Real Conditional)
PAST MODAL
GERUND
PRESENT CONTINUOUS
MODAL FOR OBLIGATION