1. TensesTenses
Simple Present (V. Base Form)Simple Present (V. Base Form)
be = is (he, she, it), am (I), are (you,be = is (he, she, it), am (I), are (you,
they)they)
have = have (I, you, we, they), has (he,have = have (I, you, we, they), has (he,
she, it)she, it)
do = do (I, you, we, they), does (he,do = do (I, you, we, they), does (he,
she, it)she, it)
eat = eat (I, you, we, they),eats (he,eat = eat (I, you, we, they),eats (he,
she, it)she, it)
-The objective of this research-The objective of this research isis toto
develop an effective application fordevelop an effective application for

2. • Simple Past (V.2)Simple Past (V.2)
To be = was (I, he, she, it), were (you,To be = was (I, he, she, it), were (you,
we, they)we, they)
To have = had (all pronouns)To have = had (all pronouns)
To do = did (all pronouns)To do = did (all pronouns)
To eat = ate (all pronouns)To eat = ate (all pronouns)
-This software application-This software application waswas usefuluseful
for assisting computer users who arefor assisting computer users who are
not good at typing.not good at typing.

3. Present PerfectPresent Perfect [have/has + V.3[have/has + V.3
(Past Participle)](Past Participle)]
-The results of this study have-The results of this study have
contributed to the field of computercontributed to the field of computer
science.science.
• Future [will + V.1 (base form)]Future [will + V.1 (base form)]
-The findings of this study will be used-The findings of this study will be used
as a guideline in constructing newas a guideline in constructing new
programs.programs.

4. VoicesVoices
-Active = An agent does something.-Active = An agent does something.
(S. + V.)(S. + V.)
The researcherThe researcher interviewedinterviewed threethree
experts.experts.
-Passive = An action is done by an-Passive = An action is done by an
agent.agent.
(S. + to be + V.3)(S. + to be + V.3)
Three expertsThree experts were interviewedwere interviewed byby
three research assistants.three research assistants.