1. 當(dāng)主句謂語(yǔ)動(dòng)詞是find，see，watch，hear等感官動(dòng)詞時(shí)，從句常簡(jiǎn)化為“賓語(yǔ)+賓補(bǔ)”結(jié)構(gòu)，賓補(bǔ)為不帶to的不定式或V-ing形式。如：
She found that the wallet lay/was lying on the ground. →She found the wallet lie/lying on the ground.
2. 當(dāng)主句謂語(yǔ)動(dòng)詞是hope，wish，decide，forget，plan，agree等，且主句主語(yǔ)與從句主語(yǔ)相同時(shí)，從句可簡(jiǎn)化為不定式結(jié)構(gòu)。如：
She agreed that she could help me with my maths. →She agreed to help me with my maths.
3. 在連接代詞/副詞引導(dǎo)的賓語(yǔ)從句中，當(dāng)從句主語(yǔ)與主句主語(yǔ)或間接賓語(yǔ)一致時(shí)，賓語(yǔ)從句可簡(jiǎn)化為“連接代詞/副詞+不定式”結(jié)構(gòu)。如：
Can you tell me how I can get to the station?→Can you tell me how to get to the station?
She found that the wallet lay/was lying on the ground. →She found the wallet lie/lying on the ground.
2. 當(dāng)主句謂語(yǔ)動(dòng)詞是hope，wish，decide，forget，plan，agree等，且主句主語(yǔ)與從句主語(yǔ)相同時(shí)，從句可簡(jiǎn)化為不定式結(jié)構(gòu)。如：
She agreed that she could help me with my maths. →She agreed to help me with my maths.
3. 在連接代詞/副詞引導(dǎo)的賓語(yǔ)從句中，當(dāng)從句主語(yǔ)與主句主語(yǔ)或間接賓語(yǔ)一致時(shí)，賓語(yǔ)從句可簡(jiǎn)化為“連接代詞/副詞+不定式”結(jié)構(gòu)。如：
Can you tell me how I can get to the station?→Can you tell me how to get to the station?