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一、单项选择。
(
A.Do
B.Are
C.Is
(
B
)1. Are
the twins helping their father clean the car?A.Do
B.Are
C.Is
答案
1. 本句是现在进行时的一般疑问句，主语 the twins 是复数，be 动词用 are，故选 B。
(
—Yes, I can see it.
A.dance
B.to dance
C.dancing
C
)2. —Look! Is someone dancing
?—Yes, I can see it.
A.dance
B.to dance
C.dancing
答案
2 本句是现在进行时的一般疑问句，动词要用 -ing 形式，故选 C。
(
—No. They
A.Are;clean
B.Are;are cleaning
C.Is;are cleaning
B
)3. —Are
the students reading books in the library?—No. They
are cleaning
.A.Are;clean
B.Are;are cleaning
C.Is;are cleaning
答案
3. 本题是现在进行时的一般疑问句及其答语，主语 the students 是复数，be 动词用 are，回答他们正在做什么要用“主语 + be 动词 + 动词 -ing.”结构，故选 B。
二、根据中文意思完成对话。
1. ——你的父母正在厨房做晚饭吗? ——是的。
—
—Yes, they
2. ——他在做土豆烧肉吗? ——不,他在烧鱼。
—
—No, he is
3. ——你们在看电视吗?
——不。我们在做作业。
—
—No.
1. ——你的父母正在厨房做晚饭吗? ——是的。
—
Are
your parents cooking
dinner in the kitchen
?—Yes, they
are
.2. ——他在做土豆烧肉吗? ——不,他在烧鱼。
—
Is
he cooking meat
with potatoes
?—No, he is
cooking
fish
.3. ——你们在看电视吗?
——不。我们在做作业。
—
Are
you watching
TV?—No.
We're
doing
homework.答案
二、1. Are，cooking，kitchen，are
2. Is，cooking meat，potatoes，cooking fish
3. Are，watching，We're doing
2. Is，cooking meat，potatoes，cooking fish
3. Are，watching，We're doing
