Modals to express necessity / obligation: MUST, HAVE (GOT) TO, NEED, SHOULD, OUGHT TO, SHALL |
562 |
Present perfect with JUST |
562 |
Form: present continuous |
561 |
The auxiliary DID for emphasis |
561 |
Future continuous for temporary habitual actions in the future |
560 |
Present perfect with FOR and SINCE |
559 |
Verbs followed by the TO-infinitive or gerund with no difference in meaning |
558 |
Form: future perfect |
557 |
Other expressions referring to future time |
557 |
Form: future continuous |
555 |
Guiding questions: past time |
555 |
Past perfect continuous |
555 |
BE ON THE EDGE / POINT / VERGE OF (doing) something |
554 |
Past perfect |
554 |
Future perfect for actions completed before a point in the future |
553 |
Present simple to express past |
553 |
The difference between the past perfect and the past perfect continuous |
553 |
The "subject" of the gerund |
552 |
The TO-infinitive as a subject complement |
552 |
WHATEVER, WHOEVER, WHICHEVER, WHEREVER, WHENEVER |
552 |
Present perfect for recent events with a result in the present |
551 |
Conditionals in indirect speech |
550 |
Past continuous for actions in progress at a specific point in the past |
550 |
The definite article with ordinal numbers, superlative adjectives, ONLY, NEXT, LAST, SAME, RIGHT and WRONG |
550 |
The gerund as subject |
550 |