Выделите словообразующие элементы, исходное слово, определите, к какой части речи относятся данные слова. Переведите на русский язык. Weakly — weakness — to weaken, bitterly — bitterness, unhappy — happily — happiness, suddenly — suddenness, equally — unequal — equality, to enrich — enrichment, patiently — impatient — patience, irresponsible — responsibility, unstable — stability — to stabilize — stabilization, harmful — harmless — harmlessness, glorious — inglorious –to glorify, to discontinue — continuation — continual — continually, relation — relative — relatively, attractive — unattractive — attraction. Patiently — impatient — patience, unstable — stability — to stabilize — stabilization, possibly — impossible — possibility, inattention — attentive — attentively, helpless — helplessly — helplessness, limitation — unlimited — limitless, to coexist — existent — existence — coexistence, to disappear — to reappear — appearance — disappearance.

1. At 6.00 p.m., Bob sat down at the table and began to eat. At 6.05, Bob was eating dinner.
2. While Bob was eating dinner, Ann came through the door.
3. In other words, when Ann came through the door, Bob was eating dinner.
4. Bob went to bed at 10.30. At 11.00 Bob was sleeping .
5. While Bob was sleeping , the phone rang .
6. In other words, when the phone rang , Bob was sleeping .
7. Bob left his house at 8.00 A.M. and began to walk to class. While he was walking to class, he saw Mrs. Smith.
8. When Bob saw Mrs. smith, she was standing on her front porch. She was holding a broom. Mrs. Smith waved at Bob when saw him.

Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. In an older and closely related meaning, "science" also refers to a body of knowledge itself, of the type that can be rationally explained and reliably applied. A practitioner of science is known as a scientist.
In modern usage, "science" most often refers to a way of pursuing knowledge, not only the knowledge itself. It is also often restricted to those branches of study that seek to explain the phenomena of the material universe. In the 17th and 18th centuries scientists increasingly sought to formulate knowledge in terms of laws of nature such as Newton's laws of motion. And over the course of the 19th century, the word "science" became increasingly associated with the scientific method itself, as a disciplined way to study the natural world, including physics, chemistry, geology and biology. It is in the 19th century also that the term scientist was created by the naturalist-theologian William Whewell to distinguish those who sought knowledge on nature from those who sought other types of knowledge.