english grammer in use(二)

                          .-----------.
        .---------------->| main verb |
        |                 '-----------'
        |
        |
.--------------.
| english verb |                                       .-------------------.
'--------------'                           .---------->| primary auxiliary |
        |                                  |           '-------------------'
        |                                  |
        |                                  |
        |                .----------------.|           .-----------------.
        '--------------->| auxiliary verb |----------->| modal auxiliary |
                         '----------------'|           '-----------------'
                                           |
                                           |
                                           |
                                           |            .----------------.
                                           '----------->| semi-auxiliary |
                                                        '----------------'

Let’s see an example

Alex is a bus driver, but now he is in bed asleep. He is not driving a bus. (He is asleep) but He drives a bus. (He is a bus driver)

• Nurses look after patients in hospitals.

• I usually go away at weekends.

• The earth goes round the sun.

• The cafe opens at 7.30 in the morning.

do/does I/we/you/they work/drive/do?

I/We/You/They don’t/doesn’t/ work/drive

• I get up at 8 o’clock every morning.

• How often do you go to the dentist?

• Julie doesn’t drink tea very often

• I promise I won’t be late(not I’m promising)

• ‘What do you suggest I do?’ ‘I suggest that you…’

• I apologise…/I advise…/I insist…/I agree…/I refuse…etc

• 1. 表示现在的状态 My name is msfkl. My age is 14.
• 2. 表示经常性或者习惯性的动作 I get up at 6 every day.
• 3. 表示主语具备的性格与能力 She speaks English well.
• 4. 表示客观事事实或真理 There are seven days in a week.