S3 Intensive 3 - Rule #3 + Rule #4 (12 March 2021)

Rule #1.1 a/an/the >>> (adj.) noun

Rule #1.2 prepositions (in/on/at/about...) >>> (adj.) noun

Rule #1.3 poss. adj (my/your/its/his/her/their/our) >>> (adj.) noun

Rule #2.1 After To-infinitive

Rule #2.2 After Dummy Do (do, does, did)

Rule #2.3 After Modal Verbs (can, may, must, shall, will, need, ought to, have to, would, should, used to)

My love for reading was immediate.

We are collecting signatures for a petition.

The data was collected by various researchers.

When you have finished using the axe, please replace it.

We must have read the same report.

Present Tense

Past Tense

Base Form (Rule #2)

-ing (Rule #3)

V3/pa.pa (Rule #4)

Rule #2.1 After To-infinitive

Rule #2.2 After Dummy Do (do, does, did)

Rule #2.3 After Modal Verbs (can, may, must, shall, will, need, ought to, have to, would, should, used to)

#3.1 If prep (in/on/at/for/about...) is in front of a verb >>> gerund 动名词

#3.2 if verb >>> be + -ing (active主动)

#4.1 if verb >>> be + V3 (passive 被动）

#4.2 'has/have/had' + V3 (perfect tense)