modern periodic chemical, chemical modern periodic, modern chemical periodic; know, knew known

Dmitri Mendeleev is considered the “father” of the ___________ table. He wrote out the names, atomic masses and other properties of each ___________ elements on separate cards. Then, he ordered them according to their atomic mass.

grammatical principle

determiner

When shall is used with a subject other than the first person, what does it usually indicate? Give an example.

Using extraposition:

That his invention will make people’s life more convenient is certain.

Using inversion:

Churchill was not only a statesman but also a writer.

Reinforcing the negation:

No voters approved of the education bill proposed by the senator.

Using transferred negation:

I think that the witness didn’t tell the truth.

Using a relative clause:

She is an expert I know well. She can give you some suggestions.

Using coordination:

There are many modem communication methods available today. The traditional business letters remain an important means of sending printed messages.

Using subordination:

Work hard and you will pass the grammar test in the end.