e.g. a) He will not succeed however hard he may try.
He did not succeed however hard he may have tried.
He knew he would not succeedhowever hard he might try.
b) Hewillnotsucceedhowever hard heshould try.
B.1. No matter how … you can’t make him stop. 2. We shall insist upon this course of action whether they … 3. Whoever they … they could not get a satisfactory answer. 4. She realized that whatever … 5. Even though he … he is determined to proceed. 6. However much the boy should work … 7. Although the ship may have altered its course in the fog … 8. … no matter when the patient might recover. 9. Whatever the boy may have done … 10. However late you should get the telegram…
11. No matter how well you should feel tomorrow the doctor’s order is … 12. … though the results of the new experiment should be slightly different.