The concepts of working within time limits, marking on a screen, and guess¬ing to improve a score are often new and confus¬ing to students, and they forfeit valuable points because they must concentrate on unfamiliar pro¬cedures instead of on language questions. | PATTERNS PROBLEM 6 117 Factual Conditionals Absolute Scientific Results Remember that absolute conditionals express scientific facts. Will and a verb word expresses the opinion that the result is absolutely certain. CONDITION RESULT If S V present S V present If a catalyst is used the reaction occurs more rapidly CONDITION RESULT If S V present 9 S will verb word If a catalyst is used the reaction will occur more rapidly Avoid using will and a verb word instead of the present verb in the clause beginning with if. Avoid using the auxiliary verbs have has do and does with main verbs in the clause of result. Examples Incorrect If water freezes it has become a solid. Correct If water freezes it becomes a solid. or If water freezes it will become a solid. Incorrect If children be healthy they learn to walk at about eighteen months old. Correct If children are healthy they learn to walk at about eighteen months old. or If children are healthy they will learn to walk at about eighteen months old. Incorrect If orange blossoms are exposed to very cold temperatures they withered and died. Correct If orange blossoms are exposed to very cold temperatures they wither and die. or If orange blossoms are exposed to very cold temperatures they will wither and die. Incorrect If the trajectory of a satellite will be slightly off at launch it will get worse as the flight . progresses. Correct If the trajectory of a satellite is slightly off at launch it gets worse as the flight progresses. or If the trajectory of a satellite is slightly off at launch it will get worse as the flight progresses. 118 REVIEW OF STRUCTURE Incorrect If light strikes a rough surface it diffused. Correct If light strikes a rough surface it diffuses. or If light strikes a rough surface it will diffuse. Exercises Part A Choose the correct answer. If water is heated to 212 degrees steam. A it will boil and escape B it is boiling and escaping C it boil and escape D it would boil and escape Part B Choose the
