[典例剖析] 选词填空。
1. —My gloves are too small. —Try ________ (this/these), Lin Hong.
2. Your shirt is too short. Try ________ (this/these), please.
点拨 第1小题，设空处指代的是复数名词gloves，应用these。第2小题，设空处指代的是单数名词shirt，应用this。故填these，this。

[反馈练习] (一) 根据中文提示填空。
1. This pair of shoes is just right. Please ________ ________ (试试它们).
2. Please don’t ________ ________ ________ (试这件外套). It’s too big.
(二) 单项选择。
( )—Your trousers ________ too short. Try ________. —All right.
A. is; this B. are; this C. are; these

重难精讲
一、（一）1. try them 2. try this coat
（二）C