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必修3《Grammar》优质课PPT课件下载
computer.
A. and B. however C. but D. while
Excuse me for breaking in, _____ I have some news
for you.
A. so B. and C. but D. yet
C
Ask the students to do the flowing exercises
C
C
3. Some people waste a lot of food _____ others haven’t
enough to eat.
A. however B. when C. as D. while
4. _____ he had to write a history paper.
_____ he couldn’t find time to do it.
A. Although; but B. Although; /
C. Even thought; / D. Even if; /
D
B
Grammar - 2.Observation (3m)
We are making progress but we need to make
greater efforts.
In a developed country, people have nice clothes
to wear, however, in a poor country , people have
few clothes.
表示转折关系的并列句，常由连词but，yet， while