1. ‘Scarcely’ and ‘hardly’ are followed by ‘when’ and not by ‘than’.
1.I had scarcely entered the room than the phone rang. ( Incorrect)
2.I had scarcely entered the room when the phone rang. ( Correct)
2. ‘Though’ is followed by ‘yet’ and not by ‘but’.
1.Though he is poor but he is honest. (Incorrect )
2.Though he is poor, yet he is honest. (Correct)
3. ‘No sooner’ is followed by ‘than’.
1.No sooner had I entered the class when the students stood up. ( Incorrect)
2.No sooner had I entered the class than the students stood up ( Correct)
Attention must also be given to the verb form while using ‘no sooner than’. The correct forms are past perfect orpast indefinite.
1.No sooner had I entered the class than the students stand up. ( Incorrect)
2.No sooner had I entered the class than the students stood up. ( Correct)
4. ‘Lest’ must be followed by ‘should’.
1.Read regularly lest you will fail. ( Incorrect)
2.Read regularly lest you should fail. ( Correct)
5. ‘Such’ is followed by ‘as’.
1.He is such a writer that everyday should read his books. (Incorrect)
2.He is such a writer as everyday should read his books. ( Correct)
6. ‘So’ is followed by ‘that’
1.Sarita was so popular with her classmates that she always had some people coming to her for advice.
7. ‘Unless’ expresses a condition. It is always used in the negative sense. Thus ‘not’ is never used with ‘unless’.
1.Unless you do not labour hard, you will not pass. ( Incorrect)
2.Unless you labour hard, you will not pass. ( Correct)
8. When an action has taken place in two clauses of a sentence, it is used in both the clauses according to the requirement.
1.My brother has and is still doing excellent work for his organization (Incorrect)
2.My brother has done and is still doing excellent work for his organization. ( Correct)
9. When there is a sense of continuity, that is, when a thing has taken place in the past and still continues in the present, the perfect continuous tense form of the verb should be used.
1.India is independent for the last forty six years. ( Incorrect)
2.India has been independent for the last forty six years. (Correct)
10. Use of ‘when’ and ‘while’: Proper attention must be paid to these words. ‘When’ indicates a general sense and ‘while’ implies a time during the process of doing a work.
1.When learning to swim, one of the most important things is to relax. (Incorrect)
2.While learning to swim, one of the most important things is to relax. (Correct)